Turbochargers

When you are ready for the next level, we have what you need!

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6.5L Parts Specialists

We have you covered!

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Quadstar GEP Optimizer 6500

Complete Engines

We stock complete Optimizer engines and parts thereof

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Reliability

When factory parts fail, we have a solution!

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ARP Fastners

Our unmatched supply of unique fastners is proudly made in the USA by ARP!

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Quadstar GEP Optimizer 6500

In House Tuning

International Shipping

Frequent New Products

Constantly Innovating

Featured Items

NEW or Featured Items

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P400 6.5L Cylinder Head
AM General

P400 6.5L Cylinder Head

In stock
$1,500.00 USD
6.5L Gapless Piston Ring Kit
Total Seal

6.5L Gapless Piston Ring Kit

In stock
$400.00 USD
Pre-order
6.5L DB2 Throttle Cable
Quadstar Tuning LLC

6.5L DB2 Throttle Cable

Coming soon
Pre-order $129.99 USD
6.5L OBDI Single Tune for 1994-95
Quadstar Tuning

6.5L OBDI Single Tune for 1994-95

In stock
$350.00 USD
Sale
Fluidampr and Big Ass Balancer Bolt Kit
Quadstar Tuning

Fluidampr and Big Ass Balancer Bolt Kit

In stock
$560.00 USD
$633.54 USD $560.00 USD
Cometic MLS 6.5L Head Gasket
Cometic Gaskets

Cometic MLS 6.5L Head Gasket

In stock
$150.00 USD
Super 54 Turbocharger Kit
Quadstar Tuning

Super 54 Turbocharger Kit

In stock
$1,300.00 USD
6.5L OBDII Single Tune for 1996+
Quadstar Tuning

6.5L OBDII Single Tune for 1996+

In stock
$350.00 USD

Products by Collection

All collections
Cooling

Cooling

Radiators, oil cooler lines, transmission coolers and all related components
Shop Cooling
Custom Tuning

Custom Tuning

Custom tuning and tuners for your 6.5L turbo diesel. All work is performed in-house and tailored to your needs!
Shop Custom Tuning
Engine Electronics

Engine Electronics

Sensors, wiring, charging, and modules

Shop Engine Electronics
Fuel Injection

Fuel Injection

Pumps, Injectors, Lift Pumps, Filters, additives and everything else!
Shop Fuel Injection
Engines and Cylinder Heads

Engines and Cylinder Heads

Complete engines and cylinder heads

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Intake & Exhaust

Intake & Exhaust

Air intake and exhaust parts
Shop Intake & Exhaust
Turbochargers & Parts

Turbochargers & Parts

Turbocharger kits, parts, and installation components
Shop Turbochargers & Parts
Engine Internals

Engine Internals

6.2 6.5L engine rebuild parts and upgrades
Shop Engine Internals
Gaskets and Seals

Gaskets and Seals

Individual gaskets and kits

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Engine External

Engine External

External parts and accessories related to the 6.2 or 6.5L diesel engine
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Gauges & Monitoring

Gauges & Monitoring

Gauges, pods, monitors, and sensors
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All Products

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