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OE Quality
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CalorstatPart #: TH6529.87J
Calorstat TH6529.87J Engine Coolant Thermostat
⚙️ 5 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$46.05Free 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: Audi, A6 Quattro and S6
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST
Not what you need? Click here for all Engine Coolant Thermostat options
Calorstat TH6529.87J Engine Coolant Thermostat
| Brand | Calorstat |
| Part Number | TH6529.87J |
| Sealing Flange Outside Diameter | 2.63 |
| Height Between Flanges | 0.98 |
| Type | Standard |
| Gasket Or Seal Included | Yes |
| Jiggle Pin Weep Hole | Yes |
| Seal Type | O-ring |
| Start to Open Temperature | 188.0 |
| Seal Material | Rubber |
| 9813 | 1.37 |
| 9841 | 1 |
| 9844 | 1 |
| 9852 | 1 |
| 9943 | Yes |
| By-Pass Valve Diameter | 35.0 |
| Height Shoulder | 8.0 |
| Height, By-Pass Side | 25.0 |
| Valve-Seat Diameter | 67.0 |
This part fits 5 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2004 | Audi | A6 Quattro | 4.2L | V8 | N/A | Vernet is an OE Supplier to Audi |
| 2003 | Audi | A6 Quattro | 4.2L | V8 | N/A | Vernet is an OE Supplier to Audi |
| 2003 | Audi | S6 | 4.2L | V8 | N/A | Vernet is an OE Supplier to Audi |
| 2002 | Audi | A6 Quattro | 4.2L | V8 | N/A | Vernet is an OE Supplier to Audi |
| 2002 | Audi | S6 | 4.2L | V8 | N/A | Vernet is an OE Supplier to Audi |
* 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:
077121113B2.161.87.312820415TH14387TH14387G1TX 34 87D
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.