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Ensure your Dodge 5.9L Cummins engine operates reliably with the Mishimoto High-Temperature Thermostat, designed specifically for models from 1994 to 1998. This direct-fit replacement addresses issues caused by faulty thermostats, such as engine overheating and internal damage, by improving cooling system performance. Featuring a higher activation temperature of 190°F compared to the stock 180°F, this thermostat restricts coolant flow longer, enabling quicker engine warm-up especially in cold climates. This optimized flow control helps maintain optimal engine temperature during operation, reducing wear and extending engine life. Crafted with precision and durability in mind, the Mishimoto thermostat guarantees a seamless fit and reliable performance, backed by the Mishimoto Lifetime Warranty for peace of mind. Whether you’re restoring your vehicle or upgrading for enhanced reliability, this thermostat is an essential component for maintaining your engine’s health and efficiency.
Features:
Fitment:
1994 Dodge Ram 2500 Base
1994 Dodge Ram 3500 Base
1995 Dodge Ram 2500 Base
1995 Dodge Ram 3500 Base
1996 Dodge Ram 2500 Base
1996 Dodge Ram 3500 Base
1997 Dodge Ram 2500 Base
1997 Dodge Ram 3500 Base
1998 Dodge Ram 2500 Base
1998 Dodge Ram 3500 Base
Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.
Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.
Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.
Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.
Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.
Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.
Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).
