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AMG GEP Optimizer 6500 Long Block
Meet Quadstar's version of the Optimizer 6500, the latest revision of the 6.5L diesel that is still in production today! It features a 506 block design with piston squirters, like a...
Regular price $8,500.00 $8,500.00
Fluidampr and Big Ass Balancer Bolt Kit
Take advantage of this special offer and get the Fluidampr and Big Ass Balancer Bolt Kit at the same time. Keep your engine happy while saving money. This exclusive kit is...
Sale price $560.00 $560.00
6.5L OBDI Multi-Position Tuner for 1994-1995
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...
Regular price $600.00 $600.00
6.5L OBDII Single Tune for 1996+
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...
Regular price $350.00 $350.00
6.5L P400 Forged Rotating Assembly
The best of the best for your 6.5L performance build! This stuff is pretty self explanatory, we are just making it available in kit form as we've taken possession of the...
Regular price $4,800.00 $4,800.00
6.5L ARP Intake Manifold Bolt Kit
ARP stainless steel intake manifold hardware kit for 6.2 and 6.5L diesel trucks Fitment Notes: This listing is for INTAKE manifold bolts for the lower intake manifold to cylinder head...
Regular price $129.99 $129.99
6.5L ARP Exhaust Manifold Bolt Kit
ARP exhaust manifold hardware kits for 6.5L turbo diesel trucks Fitment Notes: This listing is for 6.5L truck engines that use the USA passenger side turbo exhaust manifold. Years 1993-2002...
6.5L P400 Forged Crankshaft
Genuine GEP P400 6.5L forged steel crankshaft. These fit in GM 6.5L or GEP blocks with 1 piece rear main seal. They are standard in new Optimizer 6500 builds. These...
Regular price $2,250.00 $2,250.00
Cometic MLS 6.5L Head Gasket
The latest 2024 revision 4 layer multi layer steel (MLS) head gaskets for your 6.5L turbo diesel engine. Many engine platforms only use MLS gaskets now, why should the 6.5L...
Regular price $150.00 $150.00
Water Pump Backing Plate
Made from 316 Stainless Steel to prevent rust and corrosion along with a billet aluminum oil fill neck adapter and new grommet FITMENT: 1982-2003 6.2L and 6.5L Chevy/GMC applications, Hummer H1 Replaces GM part...
Regular price $179.00 $179.00
6.5L DB2-4911 250HP Injection Pump
GM/Stanadyne DB 6.5L Remanufactured Fuel Injection Pump ***MODIFIED TO 250HP OUTPUT*** These pumps go through a thorough re-manufacturing process and get re-assembled to OE specifications. Components are completely cleaned, inspected, and tested....
Sale price $874.99 $874.99
6.5L 2/0 Battery Cable Upgrade Kit
Complete 2/0 battery cable kit for your 6.5L truck. Great for replacement or upgrade; these are larger than the factory cables and will ensure you only have to do the...
Sale price $240.00 $240.00
6.5L OBDI Single Tune for 1994-95
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...
THE BEAST DS4 Injection Pump
Meet the ONLY high output DS4 injection pump available for 6.5L turbo diesel applications. Proven anywhere from stock power to 452 HP at the wheels, this pump is ready to...
Regular price $2,500.00 $2,500.00