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OE Quality
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CalorstatPart #: TH6231.88J
Calorstat TH6231.88J Engine Coolant Thermostat
⚙️ 11 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$22.28Free 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: Ford, Mazda, and Mercury, B2300, B2500, Escort, and Tracer
🔄Easy Returns — Return within 60 days for a full refund
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Calorstat TH6231.88J Engine Coolant Thermostat
| Brand | Calorstat |
| Part Number | TH6231.88J |
| Sealing Flange Outside Diameter | 1.49 |
| Height Between Flanges | 0.86 |
| Type | Standard |
| Gasket Or Seal Included | Yes |
| Seal Type | Gasket |
| Start to Open Temperature | 190.0 |
| Seal Material | Rubber |
| 9841 | 1 |
| 9844 | 1 |
This part fits 11 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2001 | Mazda | B2500 | 2.5L | L4 | N/A | Opening Temp: 88 C / 190 F |
| 2000 | Mazda | B2500 | 2.5L | L4 | N/A | Opening Temp: 88 C / 190 F |
| 1999 | Mazda | B2500 | 2.5L | L4 | N/A | Opening Temp: 88 C / 190 F |
| 1998 | Ford | Escort | 2.0L | L4 | N/A | OEM Recommended |
| 1998 | Mazda | B2500 | 2.5L | L4 | N/A | Opening Temp: 88 C / 190 F |
| 1998 | Mercury | Tracer | 2.0L | L4 | N/A | To 05/01/1998 |
| 1997 | Ford | Escort | 2.0L | L4 | N/A | Opening Temp: 88 C / 190 F |
| 1997 | Mazda | B2300 | 2.3L | L4 | N/A | Opening Temp: 88 C / 190 F |
| 1997 | Mercury | Tracer | 2.0L | L4 | N/A | Opening Temp: 88 C / 190 F |
| 1996 | Mazda | B2300 | 2.3L | L4 | N/A | Opening Temp: 88 C / 190 F |
| 1995 | Mazda | B2300 | 2.3L | L4 | N/A | Opening Temp: 88 C / 190 F |
* 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:
138201382914990207-192306-19233124303329933299S34037458205207-19265351787207-1927306-192F57E8575ABF6TZ8575ACZZM015171ZZM615171ZZP015171ZZP015171AZZP315171
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.