HomeBelts and Cooling > Gaskets and Sealing SystemsMahle C31348 Engine Coolant Thermostat Housing O-Ring - To Engine Block
Part #: C31348

Mahle C31348 Engine Coolant Thermostat Housing O-Ring - To Engine Block

To Engine Block
⚙️ 8 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$7.59Free 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
🚗Fitment: Mazda, 929
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Engine Coolant Thermostat Housing O-Ring for Mazda 929

The Mahle C31348 Engine Coolant Thermostat Housing O-Ring is designed to provide a secure seal for the thermostat housing in Mazda 929 models. This essential component helps maintain proper engine temperature by preventing coolant leaks and ensuring efficient thermostat operation.

  • Precision-engineered O-ring for thermostat housing sealing
  • Compatible specifically with Mazda 929 vehicles
  • Durable material resistant to heat and coolant exposure
  • Part number C31348 for accurate identification and fitment
  • Ensures leak-free performance in the engine cooling system

Product Details and Compatibility

This Mahle Engine Coolant Thermostat Housing O-Ring (part number C31348) is manufactured to meet OEM specifications for Mazda 929 models. The O-ring is a critical sealing component that fits between the thermostat housing and engine block, preventing coolant leaks that can lead to overheating or engine damage. Its durable construction withstands the high temperatures and chemical exposure typical in engine cooling systems, ensuring long-lasting performance.

Common Applications and Problem Solving

  • Prevents coolant leaks at the thermostat housing
  • Helps maintain consistent engine operating temperature
  • Reduces risk of engine overheating due to seal failure
  • Eliminates coolant seepage that can cause corrosion or damage
  • Supports proper thermostat function and engine cooling efficiency

Installation Notes and Tips

When replacing the thermostat housing O-ring on a Mazda 929, ensure the mating surfaces are clean and free of old gasket material or debris. Carefully seat the Mahle C31348 O-ring in the thermostat housing groove to avoid pinching or twisting. Proper installation helps maintain a tight seal and prevents coolant leaks. It is recommended to inspect the thermostat housing and surrounding components for wear or damage during replacement.

Quality Assurance and Warranty

Mahle parts are manufactured to meet strict quality standards, ensuring reliable fit and function. The C31348 Engine Coolant Thermostat Housing O-Ring undergoes rigorous testing to confirm durability and compatibility with Mazda 929 cooling systems. While specific warranty details are not provided, Mahle products typically come with manufacturer-backed quality assurance to support vehicle maintenance needs.

This part fits 8 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1995Mazda9293.0LV6To Engine BlockFor optimal performance during installation of Engine Coolant Thermostat Seal, use the included gasket from the set.
1994Mazda9293.0LV6To Engine BlockFor optimal performance during installation of Engine Coolant Thermostat Seal, use the included gasket from the set.
1993Mazda9293.0LV6To Engine BlockFor optimal performance during installation of Engine Coolant Thermostat Seal, use the included gasket from the set.
1992Mazda9293.0LV6To Engine BlockFor optimal performance during installation of Engine Coolant Thermostat Seal, use the included gasket from the set.
1991Mazda9293.0LV6To Engine BlockFor optimal performance during installation of Engine Coolant Thermostat Seal, use the included gasket from the set.
1990Mazda9293.0LV6To Engine BlockFor optimal performance during installation of Engine Coolant Thermostat Seal, use the included gasket from the set.
1989Mazda9293.0LV6To Engine BlockFor optimal performance during installation of Engine Coolant Thermostat Seal, use the included gasket from the set.
1988Mazda9293.0LV6To Engine BlockFor optimal performance during installation of Engine Coolant Thermostat Seal, use the included gasket from the set.

* 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:

0390105

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