Gates 31535 Radiator Cap

Gates 31535 Safety Release Radiator Cap

The Gates 31535 Safety Release Radiator Cap is built for cooling systems that require an 18 psi pressure rating and a cam-on attachment style. Its safety release lever helps vent steam through an overflow tube before the cap is fully removed, adding a practical layer of burn protection during service.

With stainless steel construction, a vented design, and OE Exact comparison rating, this radiator cap is a direct-fit cooling system service part for a wide range of Chrysler, Dodge, Jeep, Ram, Cadillac, Pontiac, Oldsmobile, Chevrolet, and Mercedes-Benz applications.

Key Features

• Part number: 31535
• Safety release cap with quick pressure release lever
• 18 psi pressure rating; SAE pressure range 16-20 psi
• Cam-on attachment type for proper filler neck engagement
• Stainless steel cap finish with silver color
• Vented design with optional coolant recovery system use
• OE Exact comparison rating for direct replacement selection
• Filler neck inside diameter: 1.61 in / 41 mm
• Filler neck outside diameter: 2.13 in / 54 mm
• Cap depth and height: 1.48 in

Product Details

Gates Safety Release Radiator Caps are designed around controlled pressure release, helping reduce the risk of accidental contact with hot coolant vapor during radiator service. The lever-operated release vents steam through the overflow tube before the cap is removed, while the 18 psi rating supports the pressure requirements used across many late-model and earlier Chrysler-family cooling systems. If you are replacing a worn radiator cap on a Dodge Durango, Jeep Grand Cherokee, or Chrysler 300, this Gates 31535 cap provides the correct style and pressure specification for the listed applications.

This part cross-references Dorman - HELP 46067 and Four Seasons 33066 for the same application.

Common Problems This Part Can Address

• Coolant loss caused by a weak or failing radiator cap seal
• Steam release issues from a cap that no longer holds system pressure
• Difficulty servicing a hot cooling system safely
• Incorrect pressure control in an 18 psi radiator cap application
• Fitment problems from using the wrong filler neck style or cap depth

Installation Notes and Tips

Verify the filler neck dimensions before installation: 1.61 in inside diameter, 2.13 in outside diameter, and 0.75 in filler neck depth. Confirm the vehicle calls for an 18 psi safety release radiator cap and that the cam-on style matches the radiator or coolant reservoir neck. For best results, inspect the sealing surface, neck condition, and overflow routing before installing the cap.

Compatible With 1993-2021 Jeep Grand Cherokee, 1997-2010 Jeep Wrangler, 2005-2010 Dodge Charger, 2005-2008 Dodge Magnum, 2005-2006 Pontiac GTO, and other listed Chrysler, Dodge, Jeep, Ram, Cadillac, Pontiac, Oldsmobile, Chevrolet, and Mercedes-Benz applications. Fits 2011-2026 Dodge Durango, N/A; Fits 2000 Dodge Durango, N/A; Fits 1993-2021 Jeep Grand Cherokee, N/A; Fits 2018 Dodge Journey, N/A; Fits 2011-2015 Dodge Journey, N/A; Fits 2009 Dodge Journey, N/A; Fits 2013-2014 Jeep Wrangler, N/A; Fits 1997-2010 Jeep Wrangler, N/A; Fits 2011-2012 Ram 2500, N/A; Fits 2011-2012 Ram 3500, N/A; Fits 2005-2010 Chrysler 300, N/A; Fits 2010 Chrysler Sebring, N/A; Fits 2002-2006 Chrysler Sebring, N/A; Fits 2008-2010 Dodge Challenger, N/A; Fits 2006-2010 Dodge Charger, N/A; Fits 2007-2010 Dodge Nitro, N/A; Fits 2006-2010 Jeep Commander, N/A; Fits 2007-2010 Jeep Liberty, N/A; Fits 2002-2005 Jeep Liberty, N/A; Fits 2003-2009 Chrysler PT Cruiser, N/A; Fits 2004-2008 Chrysler Pacifica, N/A; Fits 2005-2008 Dodge Magnum, N/A; Fits 2001-2006 Dodge Stratus, N/A; Fits 1997-2006 Jeep TJ, N/A; Fits 2005-2006 Pontiac GTO, N/A; Fits 2001-2005 Cadillac DeVille, N/A; Fits 2005 Chrysler Cirrus, N/A; Fits 2003-2005 Dodge Neon, N/A; Fits 2003-2005 Dodge Sprinter 2500, N/A; Fits 2003-2005 Dodge Sprinter 3500, N/A; Fits 2004-2005 Mercedes-Benz Sprinter, N/A; Fits 2005 Pontiac Bonneville, N/A; Fits 2003 Dodge Ram 1500 Van, N/A; Fits 1999-2003 Dodge Ram 1500 Van, N/A; Fits 1999-2003 Dodge Ram 2500 Van, N/A; Fits 1999-2003 Dodge Ram 3500 Van, N/A; Fits 2001-2003 Oldsmobile Aurora, N/A; Fits 2001-2002 Cadillac Eldorado, N/A; Fits 1993-2002 Chevrolet Camaro, N/A; Fits 1993-2002 Pontiac Firebird, N/A; Fits 2000-2001 Dodge Dakota, N/A; Fits 1993 Jeep Grand Wagoneer, N/A; Fits 1991-1992 Dodge Monaco, N/A.

Quality Assurance

Gates is a recognized name in automotive cooling and power transmission components, and this radiator cap is listed with an OE Exact comparison rating for application matching. The stainless steel finish, vented construction, and safety release lever support consistent serviceability in the specified vehicles.