NEW ITEMS

 Another Quadstar Original, new for 2019. These block-off plates are designed for engine or cylinder head storage where you want to keep everything sealed and clean.  Constructed from heavy duty...

Another Quadstar exclusive! We originally made these to use on our own and can now share them with you! Constructed of powder-coated heavy-gauge steel, these are built to use frequently. Simple...

A Quadstar Tuning exclusive!  Customized to fit the 1994 and 1995 6.5L diesels with a removable chip in the PCM. This is a plug & play unit that holds up to...

For all 1996 and newer 6.5L Turbo diesel vehicles including trucks, vans, cab-chassis, boats, and anything else with a DS4 pump!  This PCM is a sealed unit and requires re-flashing with a...

Single replacement PROM chip for 1994 and 1995 6.5L Diesel vehicles. After completing an order, we will provide a comprehensive online form for you to fill out with all vehicle...

Genuine ARP flexplate bolt set for all automatic transmission 6.2 and 6.5L diesel engines.  Rest assured you have the best when installing these.

Your online outlet for premium quality 6.5L turbo marine style injectors. Each injector is hand-built with genuine Bosch nozzles. Pop pressures are guaranteed to be within spec and are calibrated using...

GM DS 6.5L Fuel Injection Pump These pumps go through a thorough re-manufacturing process and get reassembled to OE specifications. Components are completely cleaned, inspected, and tested. Worn or damaged...

Complete 6.5L turbo spec replacement aftermarket cylinder heads with diamond pre-cups.  Ready to install with true surface, proper valve depth & no core charge. Generally accepted as being better all-around...

Genuine Mahle set of 8 NEW pistons with pins and rings.  Turbo style with hard anodized crowns and factory compression ratio. Mahle was/is the OEM supplier for 6.5L turbo diesel...