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Description
Mishimoto 89-93 Dodge 5.9L Cummins 87.5C High-Temperature ThermostatThe 12 valve first gen Cummins in your Ram is considered one of the best diesel engines ever produced, and for good reason. Fuel efficiency, torque, and simplicity are just a few characteristics that give the Cummins its stellar reputation. We're huge fans of the Cummins engine, which is why we've developed a high temperature thermostat for the 1989 1993 5. 9L 12v Cummins. This Mishimoto thermostat activates at a higher temperature (189. 5F) compared
The 12-valve first-gen Cummins in your Ram is considered one of the best diesel engines ever produced, and for good reason. Fuel efficiency, torque, and simplicity are just a few characteristics that give the Cummins its stellar reputation. We're huge fans of the Cummins engine, which is why we've developed a high-temperature thermostat for the 1989-1993 5.9L 12v Cummins. This Mishimoto thermostat activates at a higher temperature (189.5F) compared to the factory thermostat (180F). By raising the activation temperature, coolant flows through the system later, promoting quicker engine warmup. The Mishimoto high-temperature thermostat is ideal for vehicles in cold climates, where rapid warmup and quicker in-cabin heat is vital. This thermostat includes a high-quality replacement gasket and our signature Mishimoto Lifetime Warranty.This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1989-1993 | Dodge | D250 | Base |
| 1989-1993 | Dodge | D350 | Base |
| 1989-1993 | Dodge | W250 | Base |
| 1989-1993 | Dodge | W350 | Base |
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Exchange/Return Notes
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4.9 ★★★★★
Based on 23 reviews
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Product Reviews
★★★★★ 5
Stylish, Comfortable, and Versatile
Size: 11.5, Color: Ivory/Natural
I purchased the Cole Haan GrandPro Rally Canvas Court Sneakers in the cream/white color for both my husband and my brother, and they absolutely love them. These sneakers are sharp-looking, versatile, and pair well with everything from jeans to more polished, dressy-casual outfits.
Most importantly, they're incredibly comfortable right out of the box. The quality and craftsmanship are exactly what I've come to expect from Cole Haan.
If you're looking for a clean, classic sneaker that can be dressed up or down, I highly recommend these. A great purchase all around!
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Reviewed in the United States on May 30, 2026
★★★★★ 5
100% satisfy
Size: 10, Color: Ivory/Natural
Well made Canvas; Perfect fit; Beautiful design and look; Complementing material; Casual Elegance; Excellent price. I tried them with and without socks and they are as comfy as they can be. The elastic shoelaces gives them a better fit and hold all around.
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Reviewed in the United States on April 6, 2026
★★★★★ 5
Good shoe and affordable.
Size: 10.5, Color: Dusty Olive/White
Shoes fit and are very comfortable
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Reviewed in the United States on April 26, 2026
★★★★★ 4
Solid sneakers—worth it on a good discount
Size: 9, Color: Vintage Indigo Canvas/Natural
These sneakers are solid overall. They look good and feel comfortable for everyday use, and the quality is what I’d expect from the brand.
One thing to note: if you have to walk a lot, they can start to feel less comfortable on the top of the foot (upper area). It’s not a dealbreaker, but you’ll notice it on longer days.
That said, they’re definitely worth it if you catch a really good discount.
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Reviewed in the United States on February 12, 2026
★★★★★ 5
Quality sneaker.
Size: 12, Color: Ivory/Natural
Good looking sneaker. I wear a 12, these seem to run large.
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Reviewed in the United States on April 21, 2026