HomeBelts and Cooling > Thermostat and HousingMotorad 304-170 Engine Coolant Thermostat
Part #: 304-170

Motorad 304-170 Engine Coolant Thermostat

Standard
⚙️ 181 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Standard
🚗Fitment: Audi, Seat, Volkswagen, Porsche, BMW, Dodge, and Eagle, A8 Quattro, A3 Quattro, TT Quattro, Alhambra, Eos, R32, Touareg, Cayenne, Phaeton, Allroad Quattro, Golf, Passat, A6 Quattro, RS6, Jetta, S6, S8, S4, EuroVan, A4, A4 Quattro, A6, A8, Cabriolet, 528i, 90, 90 Quattro, 318i, 318is, 318ti, 100, 100 Quattro, V8 Quattro, 525iT, Monaco, Premier, and 80 Quattro
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Reliable Engine Coolant Thermostat for Audi, BMW, Dodge, Porsche, Volkswagen

The Motorad Standard 304-170 engine coolant thermostat is designed to maintain optimal engine temperature for a range of vehicles including Audi A4 Quattro, BMW 318i, Dodge Caravan, Porsche Cayenne, and Volkswagen Golf. Engineered to open at 170°F, this thermostat ensures efficient coolant flow and engine performance.

  • Sealing flange outside diameter: 2.64 inches
  • Height between flanges: 1.37 inches
  • Standard type thermostat with jiggle pin weep hole
  • Start to open temperature: 170°F
  • Bypass diameter: 1.37 inches, bypass length: 1.50 inches
  • Flange thickness: 0.05 inches
  • Gasket or seal not included
  • Installation tool not included

About the Motorad Standard Product Line

The Motorad Standard line offers dependable engine cooling components designed to meet OEM specifications. The 304-170 thermostat is part of this line, providing consistent temperature regulation and durability for various European and American vehicles. This product line focuses on standard fitment and reliable performance without additional accessories like gaskets or installation tools.

Product Details and Specifications

This engine coolant thermostat features a precise 170°F opening temperature, critical for maintaining proper engine operating temperature and preventing overheating or overcooling. The jiggle pin weep hole allows trapped air to escape, improving coolant circulation and system efficiency. With a sealing flange diameter of 2.64 inches and a height of 1.95 inches, it fits securely within the cooling system housing. The bypass diameter and length ensure proper coolant flow during thermostat closure, supporting engine warm-up and temperature stability.

Compatible Vehicles and Applications

  • Compatible with Audi models including A3 Quattro, A4, A6 Quattro, and Allroad Quattro
  • Fits BMW 318i, 318is, 318ti, 525iT, and 528i
  • Suitable for Dodge EuroVan and Caravan models
  • Designed for Porsche Cayenne and 911 models
  • Works with Volkswagen Golf, Jetta, Passat, Touareg, and R32

Common Issues Addressed by This Thermostat

  • Engine overheating due to thermostat failure
  • Inconsistent engine temperature regulation
  • Coolant flow blockage or restriction
  • Delayed engine warm-up times
  • Coolant leaks around thermostat housing flange

Installation Notes and Tips

Ensure the thermostat housing is clean and free of old gasket material before installation. This Motorad 304-170 thermostat does not include a gasket or seal, so a compatible gasket must be sourced separately. The jiggle pin should be positioned at the top to allow air to escape during coolant circulation. No special installation tools are included, so use appropriate hand tools and follow vehicle-specific service manual instructions for proper torque specifications.

Quality Assurance and Warranty

Motorad Standard thermostats are manufactured to meet OEM standards for fit and function. While no specific warranty information is provided, Motorad products typically undergo rigorous quality control to ensure reliability and durability in engine cooling applications.

BrandMotorad
Part Number304-170
PositionStandard
Bypass Diameter1.37 in
Bypass Length1.50 in
Flange Thickness0.05 in
Gasket Or Seal IncludedNo
Height1.95
Height Between Flanges1.37
Installation Tool IncludedNo
Jiggle Pin Weep HoleYes
Sealing Flange Outside Diameter2.64
Start to Open Temperature170
Temperature170 Deg. F
Temperature (Degree)170
TypeStandard

This part fits 181 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2010AudiA8 Quattro6.0LW12N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2010AudiA8 Quattro4.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2009AudiA3 Quattro3.2LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2009AudiA8 Quattro4.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2009AudiQ74.2LV8N/AStandard
2009AudiS65.2LV10N/AStandard
2009AudiS85.2LV10N/AStandard
2009AudiTT Quattro3.2LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2008AudiA3 Quattro3.2LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2008AudiA8 Quattro4.2LV8N/AStandard
2008AudiQ74.2LV8N/AStandard
2008AudiS65.2LV10N/AStandard
2008AudiS85.2LV10N/AStandard
2008AudiTT Quattro3.2LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2008VolkswagenEos3.2LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2008VolkswagenR323.2LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2007AudiA3 Quattro3.2LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2007AudiA8 Quattro4.2LV8N/AStandard
2007AudiS65.2LV10N/AStandard
2007AudiS85.2LV10N/AStandard
2007VolkswagenEos3.2LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2007VolkswagenTouareg4.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2006AudiA3 Quattro3.2LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2006AudiA8 Quattro4.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2006AudiTT Quattro3.2LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2006PorscheCayenne3.2LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2006VolkswagenPhaeton4.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2006VolkswagenTouareg4.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2006VolkswagenTouareg3.2LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2005AudiA8 Quattro4.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2005AudiAllroad Quattro2.7LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2005AudiTT Quattro3.2LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2005PorscheCayenne3.2LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2005VolkswagenGolf2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2005VolkswagenPassat2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2005VolkswagenPhaeton4.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2005VolkswagenTouareg4.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2005VolkswagenTouareg3.2LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2004AudiA6 Quattro4.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2004AudiA6 Quattro2.7LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2004AudiA8 Quattro4.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2004AudiAllroad Quattro2.7LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2004AudiRS64.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2004AudiTT Quattro3.2LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2004PorscheCayenne3.2LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2004VolkswagenGolf2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2004VolkswagenJetta2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2004VolkswagenPassat2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2004VolkswagenPhaeton4.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2004VolkswagenR323.2LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2004VolkswagenTouareg4.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2004VolkswagenTouareg3.2LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2003AudiA6 Quattro4.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2003AudiA6 Quattro2.7LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2003AudiAllroad Quattro2.7LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2003AudiRS64.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2003AudiS64.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2003AudiS84.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2003VolkswagenGolf2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2003VolkswagenJetta2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2003VolkswagenPassat2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2002AudiA6 Quattro4.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2002AudiA6 Quattro2.7LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2002AudiA8 Quattro4.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2002AudiS42.7LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2002AudiS64.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2002AudiS84.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2002VolkswagenEuroVan2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2002VolkswagenEuroVan2.5LL5N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2002VolkswagenGolf2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2002VolkswagenJetta2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2002VolkswagenPassat2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2001AudiA42.8LV6N/AEngine Coolant Thermostat with OE specified temperature of 170F.; Standard
2001AudiA4 Quattro2.8LV6N/AEngine Coolant Thermostat with OE specified temperature of 170F.; Standard
2001AudiA62.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2001AudiA6 Quattro4.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2001AudiA6 Quattro2.8LV6N/AEngine Coolant Thermostat with OE specified temperature of 170F.; Standard
2001AudiA6 Quattro2.7LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2001AudiA8 Quattro4.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2001AudiS42.7LV6N/AEngine Coolant Thermostat with OE specified temperature of 170F.; Standard
2001AudiS84.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2001VolkswagenGolf2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2001VolkswagenJetta2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2001VolkswagenPassat2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2000AudiA42.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2000AudiA4 Quattro2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2000AudiA62.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2000AudiA6 Quattro4.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2000AudiA6 Quattro2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2000AudiA6 Quattro2.7LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2000AudiA8 Quattro4.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2000AudiS42.7LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2000VolkswagenEuroVan2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2000VolkswagenGolf2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2000VolkswagenJetta2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
2000VolkswagenPassat2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1999AudiA42.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1999AudiA4 Quattro2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1999AudiA62.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1999AudiA6 Quattro2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1999AudiA83.7LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1999AudiA8 Quattro4.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1999VolkswagenEuroVan2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1999VolkswagenGolf2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1999VolkswagenGolf1.8LL4N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1999VolkswagenJetta2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1999VolkswagenPassat2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1998AudiA42.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1998AudiA4 Quattro2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1998AudiA62.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1998AudiA6 Quattro2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1998AudiA83.7LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1998AudiA8 Quattro4.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1998AudiCabriolet2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1998BMW528i2.8LL6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1998VolkswagenGolf2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1998VolkswagenJetta2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1998VolkswagenPassat2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1997AudiA42.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1997AudiA4 Quattro2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1997AudiA62.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1997AudiA6 Quattro2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1997AudiA83.7LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1997AudiA8 Quattro4.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1997AudiCabriolet2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1997BMW528i2.8LL6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1997VolkswagenEuroVan2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1997VolkswagenGolf2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1997VolkswagenJetta2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1997VolkswagenPassat2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1996AudiA42.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1996AudiA4 Quattro2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1996AudiA62.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1996AudiA6 Quattro2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1996AudiCabriolet2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1996VolkswagenGolf2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1996VolkswagenJetta2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1996VolkswagenPassat2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1995Audi902.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1995Audi90 Quattro2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1995AudiA62.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1995AudiA6 Quattro2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1995AudiCabriolet2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1995BMW318i1.8LL4N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1995BMW318is1.8LL4N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1995BMW318ti1.8LL4N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1995VolkswagenGolf2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1995VolkswagenJetta2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1995VolkswagenPassat2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1994Audi1002.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1994Audi100 Quattro2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1994Audi902.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1994Audi90 Quattro2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1994AudiCabriolet2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1994AudiV8 Quattro4.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1994BMW318i1.8LL4N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1994BMW318is1.8LL4N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1994VolkswagenJetta2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1994VolkswagenPassat2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1993Audi1002.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1993Audi100 Quattro2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1993Audi902.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1993Audi90 Quattro2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1993AudiV8 Quattro4.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1993BMW318i1.8LL4N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1993BMW318is1.8LL4N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1993BMW525iT2.5LL6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1992Audi1002.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1992Audi100 Quattro2.8LV6N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1992AudiV8 Quattro4.2LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1992BMW318i1.8LL4N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1992BMW318is1.8LL4N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1992DodgeMonaco3.0LV6N/ATemperature 170F; Includes thermostat; Thermostat Located at Water Pump (Inlet System); Alternate Temperature Option; Standard
1991BMW318i1.8LL4N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1991BMW318is1.8LL4N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1991DodgeMonaco3.0LV6N/ATemperature 170F; Includes thermostat; Thermostat Located at Water Pump (Inlet System); Alternate Temperature Option; Standard
1990Audi80 Quattro2.3LL5N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1990Audi902.3LL5N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1990Audi90 Quattro2.3LL5N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1990AudiV8 Quattro3.6LV8N/A170F Engine Coolant Thermostat with alternative option included.; Standard
1990DodgeMonaco3.0LV6N/ATemperature 170F; Includes thermostat; Thermostat Located at Water Pump (Inlet System); Alternate Temperature Option; Standard

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

1601-90715170-403304-170304704097480589304170NCA2244BAP4097

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.