Motorad 304-180 Engine Coolant Thermostat

Reliable Engine Coolant Thermostat for Audi, BMW, Dodge, Porsche, Volkswagen

The Motorad Standard 304-180 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 180°F, this thermostat ensures efficient coolant flow and engine performance.

• Standard type thermostat with a 180°F start to open temperature
• Sealing flange outside diameter: 2.64 inches for precise fit
• Height between flanges: 1.37 inches, overall height: 1.95 inches
• Includes jiggle pin weep hole for air and vapor release
• Bypass diameter of 1.37 inches and bypass length of 1.50 inches
• Flange thickness of 0.05 inches for secure sealing
• Compatible with multiple Audi, BMW, Dodge, Porsche, and Volkswagen models

About the Motorad Standard Product Line

The Motorad Standard line offers dependable engine cooling components designed to meet OEM specifications. The 304-180 thermostat is part of this line, providing consistent temperature regulation and durability without additional seals or installation tools. This line focuses on delivering reliable performance for everyday driving conditions across various vehicle makes and models.

Product Details and Specifications

This engine coolant thermostat features a 180°F opening temperature, which is critical for maintaining the engine’s optimal operating temperature. The sealing flange outside diameter of 2.64 inches ensures a proper fit within the cooling system housing. The thermostat’s height between flanges is 1.37 inches, with an overall height of 1.95 inches, designed to fit precisely in the cooling circuit. The jiggle pin weep hole allows trapped air and vapor to escape, preventing airlocks and promoting efficient coolant flow. The bypass diameter and length (1.37 inches and 1.50 inches respectively) facilitate coolant circulation during thermostat closure, helping to prevent engine overheating.

Compatible Vehicles and Applications

• Compatible with Audi models including A3 Quattro, A4, A6, A8, Allroad Quattro, Cabriolet, and TT Quattro
• Fits BMW 318i, 318is, 318ti, 525iT, and 528i models
• Suitable for Dodge EuroVan and Monaco
• Designed for Porsche Cayenne and Volkswagen Golf, Jetta, Passat, Phaeton, Touareg, and R32
• Also compatible with Audi RS6, S4, S6, S8, Q7, and V8 Quattro

Common Issues Addressed by This Thermostat

• Engine overheating due to thermostat failure
• Inconsistent engine temperature regulation
• Coolant flow blockage or restricted circulation
• Air trapped in the cooling system causing hot spots
• Premature engine wear from improper temperature control

Installation Notes and Tips

This thermostat does not include a gasket or seal, so ensure the existing gasket is in good condition or replace it during installation. No installation tool is included; use appropriate tools to avoid damage to the thermostat or housing. Verify the sealing flange diameter and height measurements to confirm compatibility with your vehicle’s cooling system. Proper installation is critical to prevent leaks and ensure accurate temperature control.

Quality Assurance and Warranty

The Motorad Standard 304-180 thermostat is manufactured to meet OEM standards for fit and function. While no specific warranty information is provided, Motorad products are known for consistent quality and reliability in engine cooling applications. Always verify part number compatibility with your vehicle before installation.