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MotoradPart #: 7426-190
Motorad 7426-190 Engine Coolant Thermostat
⚙️ 54 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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✅OE Direct Replacement — Bolt-on fit, no modifications needed
📦Fail-Safe
🚗Fitment: Dodge and Ram, 2500, 3500, 4000, Ram 2500, and Ram 3500
🔄Easy Returns — Return within 60 days for a full refund
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Motorad 7426-190 Engine Coolant Thermostat
| Brand | Motorad |
| Part Number | 7426-190 |
| Position | Fail-Safe |
| Sealing Flange Outside Diameter | 2.28 |
| Gasket Or Seal Included | Yes |
| Jiggle Pin Weep Hole | Yes |
| Bypass Diameter | 1.14 in |
| Bypass Length | 1.10 in |
| Flange Thickness | 0.05 in |
| Gasket/Seal Material | Rubber |
| Gasket/Seal Material | Rubber |
| Installation Tool Included | No |
| Number Of Seals | 1 |
| Temperature | 192 deg. f |
| Temperature (Degree) | 192 |
This part fits 54 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2020 | Ram | 2500 | 6.7L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2020 | Ram | 3500 | 6.7L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2019 | Ram | 2500 | 6.7L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2019 | Ram | 3500 | 6.7L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2018 | Ram | 2500 | 6.7L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2018 | Ram | 3500 | 6.7L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2017 | Ram | 2500 | 6.7L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2017 | Ram | 3500 | 6.7L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2016 | Ram | 2500 | 6.7L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2016 | Ram | 3500 | 6.7L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2015 | Ram | 2500 | 6.7L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2015 | Ram | 3500 | 6.7L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2014 | Ram | 2500 | 6.7L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2014 | Ram | 3500 | 6.7L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2013 | Ram | 2500 | 6.7L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2013 | Ram | 3500 | 6.7L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2013 | Ram | 4000 | 6.7L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2012 | Ram | 2500 | 6.7L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2012 | Ram | 3500 | 6.7L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2012 | Ram | 4000 | 6.7L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2011 | Ram | 2500 | 6.7L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2011 | Ram | 3500 | 6.7L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2011 | Ram | 4000 | 6.7L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2010 | Dodge | Ram 2500 | 6.7L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2010 | Dodge | Ram 2500 | 5.9L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2010 | Dodge | Ram 3500 | 6.7L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2009 | Dodge | Ram 2500 | 6.7L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2009 | Dodge | Ram 2500 | 5.9L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2009 | Dodge | Ram 3500 | 6.7L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2008 | Dodge | Ram 2500 | 6.7L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2008 | Dodge | Ram 2500 | 5.9L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2008 | Dodge | Ram 3500 | 6.7L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2007 | Dodge | Ram 2500 | 6.7L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2007 | Dodge | Ram 2500 | 5.9L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2007 | Dodge | Ram 3500 | 6.7L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2007 | Dodge | Ram 3500 | 5.9L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2006 | Dodge | Ram 2500 | 5.9L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2006 | Dodge | Ram 3500 | 5.9L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2005 | Dodge | Ram 2500 | 5.9L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2005 | Dodge | Ram 3500 | 5.9L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2004 | Dodge | Ram 2500 | 5.9L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2004 | Dodge | Ram 3500 | 5.9L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2003 | Dodge | Ram 2500 | 5.9L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2003 | Dodge | Ram 3500 | 5.9L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2002 | Dodge | Ram 2500 | 5.9L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2002 | Dodge | Ram 3500 | 5.9L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2001 | Dodge | Ram 2500 | 5.9L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2001 | Dodge | Ram 3500 | 5.9L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2000 | Dodge | Ram 2500 | 5.9L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 2000 | Dodge | Ram 3500 | 5.9L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 1999 | Dodge | Ram 2500 | 5.9L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 1999 | Dodge | Ram 3500 | 5.9L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 1998 | Dodge | Ram 2500 | 5.9L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
| 1998 | Dodge | Ram 3500 | 5.9L | L6 | N/A | "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 190F; Includes seal; OE Specified Temperature; Fail-Safe |
* 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:
7426-1907426197426190NIP7426-190SS195-6247
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.