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Quadstar Tuning LLC

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- Fuel Injection
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- All Intake & Exhaust
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Fuel Injection

Pumps, Injectors, Lift Pumps, Filters, additives and everything else!

Fuel Injection

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49 Products

Filter products

In stock 42
Out of stock 9

Airdog 2
Alliant Power 1
AM General 3
BD Diesel 1
Bosch 3
DieselSite 2
Dipaco 1
Dorman 1
FASS 1
Flight Systems 4
Hotshot's Secret 1
Quadstar Tuning 21
STANADYNE 8

Electronics 10
Fastner 2
Fitting 4
Fuel Injection 18
Gasket 3
Injection Pump 5
OPTIONS_HIDDEN_PRODUCT 2
Rebuild Kit 2
Seal 1
Tools 1

Flight Systems

Flight Systems PMD

In stock

Regular price €137,95 EUR
Flight Systems

PMD Calibration Resistors

In stock

Regular price €16,95 EUR
Quadstar Tuning

Fuel Inlet Upgrade for DS Pumps

In stock

Regular price €21,95 EUR
Quadstar Tuning

Injector Install Kit

In stock

Regular price €30,95 EUR
Quadstar Tuning

Lift Pump Relay Harness

In stock

Regular price From €98,95 EUR
Quadstar Tuning

Pump Timing Wrench

In stock

Regular price €47,95 EUR
Quadstar Tuning

Bosch Marine Fuel Injectors

In stock

Regular price €516,95 EUR
Quadstar Tuning

Billet Fuel Return Log

Out of stock

Regular price €67,95 EUR
Quadstar Tuning

Injection Pump PMD Harness

In stock

Regular price €30,95 EUR
Quadstar Tuning

Fuel Inlet Upgrade for DB Pumps

In stock

Regular price €12,95 EUR
Quadstar Tuning

Injection pump gasket set

Only 2 left

Regular price €47,95 EUR
Bosch

Brand New 6.5L Bosch Turbo Fuel Injectors

In stock

Regular price €430,95 EUR
STANADYNE

Optic Sensor Oring for DS Injection Pump

In stock

Regular price €8,95 EUR
STANADYNE

Top Cover Seal for DS Injection Pump

In stock

Regular price €8,95 EUR
Flight Systems

5521 DS4 Injection Pump with PMD

In stock

Regular price €752,95 EUR
Alliant Power

Oil Pressure Sensor

In stock

Regular price €36,95 EUR
DieselSite

6.5L Remote Fuel Filter Kit

In stock

Regular price From €171,95 EUR
Airdog

AirDog Lift Pump System

In stock

Regular price €677,95 EUR
Quadstar Tuning

6AN Female to 3/8 90 Degree Pushlock Hose Fitting

Out of stock

Regular price €16,95 EUR
Dipaco

6.5L DS4 Injector Hard Line Set

In stock

Regular price €227,95 EUR
BD Diesel

BD Power PMD Heatsink

Out of stock

Regular price €80,95 EUR
Quadstar Tuning

Remanufactured DS4 Injection Pump - With ULSD Upgrade

Only 2 left

Regular price €1.268,95 EUR
Quadstar Tuning

Copper Injector Washer Gasket Set

In stock

Regular price €6,95 EUR

12 3

About us

Quadstar Tuning is a small business focused on providing the highest quality parts for the 6.5L Turbo Diesel platform. We specialize in tuning but also offer a wide selection of other products.

Check back frequently as things are always changing!

Thank you for considering us for your build!

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🎄 Holiday Closure Notice

Quadstar Tuning is closed until January 2nd, 2026.

Any new order placed won't be processed until then.

Thank you for an awesome year! We'll see you in 2026! 🎉