Mishimoto racing thermostat for the Jeep Wrangler YJ / TJ, Cherokee XJ and Grand Cherokee with the 2.5L, 4.0L or 4.2L engine. It opens at a lower temperature than stock, letting coolant flow through the engine sooner to reduce and maintain cooler temperatures. Direct-fit replacement, backed by the Mishimoto Lifetime Warranty.
Specifications
| Type | Racing thermostat |
| Activation Temp | Opens earlier than stock |
| Engine | 2.5L / 4.0L / 4.2L |
| Part Number | MMTS-WRA-87L |
| Warranty | Lifetime |
| Application | Jeep Wrangler YJ/TJ / Cherokee XJ 2.5L / 4.0L / 4.2L |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1987-2006 | Jeep | Wrangler | S / SE / Sport / Sahara / Rubicon (2.5L / 4.0L) |
| 1984-2001 | Jeep | Cherokee | SE / Sport / Country / Classic (2.5L / 4.0L) |
| 1993-2004 | Jeep | Grand Cherokee | Laredo / Limited (4.0L) |
| 1987-1992 | Jeep | Wrangler | Laredo / Sahara (4.2L) |
Shipping
- In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Backordered items ship as soon as stock lands — contact us for lead times.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30-day returns on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
- Installed or used parts can’t be returned — confirm fitment before you install.
- Special orders and custom items are final sale.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Refund Policy
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