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CalorstatPart #: TH6851.82

Calorstat TH6851.82 Engine Coolant Thermostat
⚙️ 28 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$25.93Free 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.
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✅ 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: INFINITI and Nissan, Frontier, Pathfinder, Quest, QX4, and Xterra
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST
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Calorstat TH6851.82 Engine Coolant Thermostat
| Brand | Calorstat |
| Part Number | TH6851.82 |
| Sealing Flange Outside Diameter | 2.51 |
| Height Between Flanges | 1.92 |
| Type | Standard |
| Start to Open Temperature | 180.0 |
| 9813 | 0.92 |
| 9844 | 1 |
| 9852 | 1 |
| 9943 | Yes |
This part fits 28 vehicles. Search below:
| Year | Make | Model | Submodel | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2004 | Nissan | Frontier | XE | 3.3L | V6 | N/A | Vernet is an OE Supplier to Nissan |
| 2004 | Nissan | Xterra | 3.3L | V6 | N/A | Vernet is an OE Supplier to Nissan | |
| 2003 | Nissan | Frontier | XE | 3.3L | V6 | N/A | Vernet is an OE Supplier to Nissan |
| 2003 | Nissan | Xterra | 3.3L | V6 | N/A | Vernet is an OE Supplier to Nissan | |
| 2002 | Nissan | Frontier | XE | 3.3L | V6 | N/A | Vernet is an OE Supplier to Nissan |
| 2002 | Nissan | Quest | 3.3L | V6 | N/A | Vernet is an OE Supplier to Nissan | |
| 2002 | Nissan | Xterra | 3.3L | V6 | N/A | Vernet is an OE Supplier to Nissan | |
| 2001 | Nissan | Frontier | XE | 3.3L | V6 | N/A | Vernet is an OE Supplier to Nissan |
| 2001 | Nissan | Quest | 3.3L | V6 | N/A | Vernet is an OE Supplier to Nissan | |
| 2001 | Nissan | Xterra | 3.3L | V6 | N/A | Vernet is an OE Supplier to Nissan | |
| 2000 | INFINITI | QX4 | 3.3L | V6 | N/A | Vernet is an OE Supplier to Infiniti | |
| 2000 | Nissan | Frontier | 3.3L | V6 | N/A | Vernet is an OE Supplier to Nissan | |
| 2000 | Nissan | Pathfinder | 3.3L | V6 | N/A | Vernet is an OE Supplier to Nissan | |
| 2000 | Nissan | Quest | 3.3L | V6 | N/A | Vernet is an OE Supplier to Nissan | |
| 2000 | Nissan | Xterra | 3.3L | V6 | N/A | Vernet is an OE Supplier to Nissan | |
| 1999 | INFINITI | QX4 | 3.3L | V6 | N/A | Vernet is an OE Supplier to Infiniti | |
| 1999 | Nissan | Frontier | 3.3L | V6 | N/A | Vernet is an OE Supplier to Nissan | |
| 1999 | Nissan | Pathfinder | 3.3L | V6 | N/A | Vernet is an OE Supplier to Nissan | |
| 1999 | Nissan | Quest | 3.3L | V6 | N/A | Vernet is an OE Supplier to Nissan | |
| 1998 | INFINITI | QX4 | 3.3L | V6 | N/A | Vernet is an OE Supplier to Infiniti | |
| 1998 | Nissan | Pathfinder | 3.3L | V6 | N/A | Vernet is an OE Supplier to Nissan | |
| 1998 | Nissan | Quest | 3.0L | V6 | N/A | Vernet is an OE Supplier to Nissan | |
| 1997 | INFINITI | QX4 | 3.3L | V6 | N/A | Vernet is an OE Supplier to Infiniti | |
| 1997 | Nissan | Pathfinder | 3.3L | V6 | N/A | Vernet is an OE Supplier to Nissan | |
| 1997 | Nissan | Quest | 3.0L | V6 | N/A | Vernet is an OE Supplier to Nissan | |
| 1996 | Nissan | Pathfinder | 3.3L | V6 | N/A | Vernet is an OE Supplier to Nissan | |
| 1996 | Nissan | Quest | 3.0L | V6 | N/A | Vernet is an OE Supplier to Nissan | |
| 1995 | Nissan | Quest | 3.0L | V6 | N/A | Vernet is an OE Supplier to Nissan |
* 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:
139482120003J05212000B0002120022J002120085E0021200V720521200V720621200V720A268-1803373833738S481387268-180
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.