HomeBelts and Cooling > Thermostat and HousingGates 34016S Engine Coolant Thermostat
Part #: 34016S

Gates 34016S Engine Coolant Thermostat

Premium Thermostat
⚙️ 33 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$55.39Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
📦Premium Thermostat
🚗Fitment: Volkswagen and Audi, Beetle, Golf, Jetta, Passat, and 4000
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Cooling with Gates Premium Thermostat 34016S

The Gates Premium Thermostat 34016S is engineered to maintain optimal engine temperature for Audi and Volkswagen vehicles. Designed with durable stainless steel and copper materials, this engine coolant thermostat ensures consistent performance and longevity in models like the Audi 4000 and Volkswagen Jetta.

  • Constructed from stainless steel and copper for durability
  • Bottom by-pass design for efficient coolant flow
  • Sealing flange outside diameter of 2.12 inches
  • Height between flanges measures 1.4 inches
  • O-ring seal type with two seals included
  • Starts to open at 188°F (87°C) for precise temperature control
  • Compatible with Audi and Volkswagen models including Beetle, Golf, Passat, and 4000

About the Gates Premium Thermostat Product Line

The Premium Thermostat line by Gates focuses on delivering reliable engine temperature regulation through high-quality materials and precise design. This product line emphasizes durability and accurate temperature response, making it suitable for various Audi and Volkswagen vehicles. The 34016S model exemplifies these qualities with its stainless steel and copper construction and bottom by-pass design.

Detailed Product Description

The Gates 34016S engine coolant thermostat features a bottom by-pass design that allows coolant to circulate efficiently during engine warm-up, reducing wear and improving fuel efficiency. Its stainless steel and copper construction provides resistance to corrosion and thermal stress. The thermostat has a sealing flange outside diameter of 2.12 inches and a height between flanges of 1.4 inches, ensuring a precise fit. The O-ring seal type with two seals helps prevent leaks, while the thermostat begins to open at 188°F (87°C), maintaining optimal engine operating temperature.

Common Applications and Problem Solving

  • Prevents engine overheating by regulating coolant flow
  • Reduces engine warm-up time for improved efficiency
  • Eliminates coolant leaks with reliable O-ring seals
  • Maintains consistent engine temperature in Audi 4000 and Volkswagen Passat
  • Replaces faulty or worn thermostats in Volkswagen Golf and Jetta models

Installation Notes and Tips

The Gates 34016S thermostat does not include an installation tool, so ensure you have the appropriate tools for removal and installation. Verify the sealing flange dimensions and height to confirm compatibility with your vehicle. Properly clean the housing before installation to ensure a secure seal. Since this thermostat does not include gaskets, inspect and replace any existing gaskets as needed during installation.

Quality Assurance and Warranty

Gates Premium Thermostats are manufactured to meet strict quality standards, using corrosion-resistant materials like stainless steel and copper. While specific warranty details for part number 34016S are not provided, Gates products typically come with a limited warranty against defects in materials and workmanship. Always consult product documentation or the manufacturer for exact warranty terms.

BrandGates
Part Number34016S
PositionPremium Thermostat
0
.82
1.38
2
By-Pass Flange Diameter (in)1.38
DesignBottom By-Pass
DesignBottom By-Pass
Gasket Quantity0
Height2.22
Height Between Flanges1.4
Height from Flange (in).82
Includes Installation ToolNo
Installation Tool IncludedNo
Jiggle Pin Weep HoleNo
MaterialStainless Steel, Copper
MaterialStainless Steel, Copper
Number of Gaskets0
Number of Jiggle Pins/Check Valves0
Number of Seals2
Seal TypeO-Ring
Sealing Flange Outside Diameter2.12
Start to Open Temperature87
Start to Open Temperature188
TypePremium Thermostat

This part fits 33 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2006VolkswagenBeetle1.9LL4DIESELN/A190 Degree; OE Temperature; Seal included; Premium Thermostat
2006VolkswagenGolf1.9LL4DIESELN/A190 Degree; OE Temperature; Seal included; Premium Thermostat
2006VolkswagenJetta1.9LL4DIESELN/A190 Degree; OE Temperature; Seal included; Premium Thermostat
2005VolkswagenBeetle1.9LL4DIESELN/A190 Degree; OE Temperature; Seal included; Premium Thermostat
2005VolkswagenGolf1.9LL4DIESELN/A190 Degree; OE Temperature; Seal included; Premium Thermostat
2005VolkswagenJetta1.9LL4DIESELN/A190 Degree; OE Temperature; Seal included; Premium Thermostat
2005VolkswagenPassat2.0LL4DIESELN/A190 Degree; OE Temperature; Seal included; Premium Thermostat
2004VolkswagenBeetle1.9LL4DIESELN/A190 Degree; OE Temperature; Seal included; Premium Thermostat
2004VolkswagenGolf1.9LL4DIESELN/A190 Degree; OE Temperature; Seal included; Premium Thermostat
2004VolkswagenJetta1.9LL4DIESELN/A190 Degree; OE Temperature; Seal included; Premium Thermostat
2004VolkswagenPassat2.0LL4DIESELN/A190 Degree; OE Temperature; Seal included; Premium Thermostat
2003VolkswagenBeetle1.9LL4DIESELN/A190 Degree; OE Temperature; Seal included; Premium Thermostat
2003VolkswagenGolf1.9LL4DIESELN/A190 Degree; OE Temperature; Seal included; Premium Thermostat
2003VolkswagenJetta1.9LL4DIESELN/A190 Degree; OE Temperature; Seal included; Premium Thermostat
2002VolkswagenBeetle1.9LL4DIESELN/A190 Degree; OE Temperature; Seal included; Premium Thermostat
2002VolkswagenGolf1.9LL4DIESELN/A190 Degree; OE Temperature; Seal included; Premium Thermostat
2002VolkswagenJetta1.9LL4DIESELN/A190 Degree; OE Temperature; Seal included; Premium Thermostat
2001VolkswagenBeetle1.9LL4DIESELN/A190 Degree; OE Temperature; Seal included; Premium Thermostat
2001VolkswagenGolf1.9LL4DIESELN/A190 Degree; OE Temperature; Seal included; Premium Thermostat
2001VolkswagenJetta1.9LL4DIESELN/A190 Degree; OE Temperature; Seal included; Premium Thermostat
2000VolkswagenBeetle1.9LL4DIESELN/A190 Degree; OE Temperature; Seal included; Premium Thermostat
2000VolkswagenGolf1.9LL4DIESELN/A190 Degree; OE Temperature; Seal included; Premium Thermostat
2000VolkswagenJetta1.9LL4DIESELN/A190 Degree; OE Temperature; Seal included; Premium Thermostat
1999VolkswagenBeetle1.9LL4DIESELN/A190 Degree; OE Temperature; Seal included; Premium Thermostat
1999VolkswagenGolf1.9LL4DIESELN/A190 Degree; OE Temperature; Seal included; Premium Thermostat
1999VolkswagenJetta1.9LL4DIESELN/A190 Degree; OE Temperature; Seal included; Premium Thermostat
1998VolkswagenBeetle1.9LL4DIESELN/A190 Degree; OE Temperature; Seal included; Premium Thermostat
1998VolkswagenGolf1.9LL4DIESELN/A190 Degree; OE Temperature; Seal included; Premium Thermostat
1998VolkswagenJetta1.9LL4DIESELN/A190 Degree; OE Temperature; Seal included; Premium Thermostat
1987Audi40001.8LL4GASN/A190 Degree; OE Temperature; Seal included; Premium Thermostat
1986Audi40001.8LL4GASN/A190 Degree; OE Temperature; Seal included; Premium Thermostat
1985Audi40001.8LL4GASN/A190 Degree; OE Temperature; Seal included; Premium Thermostat
1984Audi40001.8LL4GASN/A190 Degree; OE Temperature; Seal included; Premium Thermostat

* 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:

3401638499441211134556294649948499TX10987D

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