Mopar 33003521 Engine Valve Spring Retainer - Upper

Mopar Valve Spring Retainer for Viper and Ram

The Mopar 33003521 engine valve spring retainer is an OE-style hardware component for select Dodge and Jeep applications. It is used in the upper valve train area to retain the valve spring and maintain proper spring location during engine operation.

Key Features

• Mopar engine valve spring retainer
• Part number 33003521
• Upper valve train position
• Direct fit for select Dodge Ram, Dakota, Durango, Viper, and Jeep models
• Built for applications that require precise valve spring retention

Detailed Description

This Mopar valve spring retainer, part number 33003521, is used in upper valve train assemblies where accurate spring control is critical. It is listed for 1997-2006 Dodge Viper, 1997 and 2000-2003 Dodge Ram 1500, 1997 and 2000-2003 Dodge Ram 2500, 1997 and 2000-2003 Dodge Ram 3500, 1997 and 2000-2003 Dodge Dakota, 2000-2003 Dodge Durango, 1999-2003 Dodge Ram 1500 Van, 1999-2003 Dodge Ram 2500 Van, 1999-2003 Dodge Ram 3500 Van, 1997-1998 Dodge B1500/B2500/B3500, and 1997-1999 Jeep Cherokee, Grand Cherokee, and TJ where specified in the fitment data. If you are sourcing a Mopar 33003521 replacement for a Dodge Viper or Ram truck engine, verify the engine build and valve train configuration before installation.

Common Uses

• Replacing a worn or damaged valve spring retainer
• Restoring valve spring location in the upper valve train
• Addressing valve train noise caused by retainer wear
• Correcting spring control issues during cylinder head service

Installation Notes

Install during cylinder head or valve train service with the engine disassembled to the appropriate level. Confirm upper-position fitment, inspect related valve train components for wear, and match the retainer to the correct engine specification before assembly.

Quality Assurance

Genuine Mopar service part for select factory applications. Part number 33003521 is cataloged for the listed vehicles and positions to support accurate OE-style replacement selection.