Quadstar Tuning LLC

Providing innovative products, performance, and reliability for GMT400, 6.2L Diesel and 6.5L Turbo Diesel Vehicles

Butler, US · prices in USD · ships to 13 countries. Catalogue read from quadstartuning.com's own public product feed on 2026-09-08. Every figure below is an observation from that feed, not an estimate.

Products
237
In stock
88%
Median price
60 USD
Discounted
42
⌀ 11.4% off

Sales estimate

quadstartuning.com does not publish stock levels. Units sold can only be derived from stock falling between two readings, so no revenue figure is possible for this store — by any method, not just ours.

Store facts

Products
269
counted in our crawl
First product
2017-07
oldest listing seen
Traffic rank
top 5,000k
Chrome UX bucket, not visits
Tracked by
0
requests on this page
Collections
18
Ships to
13 countries · *, AL, AU, CA, FI, FR, GB, IS …
Payment
visa, master, american_express, discover, diners_club · instalments

Brands carried

Matched on the store's own brand field, so these are exact — not guessed from product names.

Quadstar Tuning (104)AM General (63)DieselSite (22)ARP (17)Clevite Mahle (10)STANADYNE (8)Flight Systems (7)Bosch (4)Alliant Power (3)Cometic Gaskets (3)Dorman (3)Crazy Mater Fab (3)Quadstar Tuning LLC (2)Energy Suspension (2)AirDog (2)Scat (1)Total Seal (1)BD Diesel (1)DIPACO (1)Diamond Eye (1)Dura-Bond (1)FASS (1)Federal Mogul (1)Flowmaster (1)Fluidampr (1)HPS (1)Harland Sharp (1)Hotshot's Secret (1)Melling (1)Powermaster (1)ProMaxx (1)

Products

ProductBrandPriceWasOff
Pump Timing WrenchQuadstar Tuning42 USD64 USD−34.4%
Injection pump gasket setQuadstar Tuning30 USD42 USD−28.6%
P400 6.5L Connecting RodAM General98 USD135 USD−27.4%
6.5L Oil Pump Drive AssemblyAM General150 USD202 USD−25.7%
Copper Injector Washer Gasket SetQuadstar Tuning6 USD8 USD−25%
Overhaul Gasket Kit for DB Injection PumpSTANADYNE38 USD49 USD−22.4%
6.5L Lifter Guide PlateAM General5 USD6 USD−16.7%
Brand New 6.5L Bosch Turbo Fuel InjectorsBosch375 USD449 USD−16.5%
P400 Rod BearingAM General11 USD13 USD−15.4%
ARP Big Ass Balancer BoltARP45 USD53 USD−15.1%
Quadstar Snapback HatQuadstar Tuning23 USD27 USD−14.8%
Quadstar Flex Fit HatQuadstar Tuning23 USD27 USD−14.8%
6.5L Connecting RodAM General90 USD105 USD−14.3%
P400 6.5L Cylinder HeadAM General1125 USD1,346 USD−13.7%
PMD Calibration ResistorQuadstar Tuning13 USD15 USD−13.3%
6.5L DB2 24v 205 HP Turbo Injection PumpSTANADYNE1312 USD1,500 USD−12.5%
Fluidampr and Big Ass Balancer Bolt KitQuadstar Tuning420 USD476 USD−11.8%
6.5L PistonsClevite Mahle600 USD675 USD−11.1%
Mahle 6.5L Piston Ring KitsClevite Mahle135 USD150 USD−10%
ARP Head Stud KitARP237 USD262 USD−9.5%
6.5L CamshaftAM General375 USD413 USD−9.2%
6.5L Center Mount Turbo Optimizer Cylinder HeadAM General750 USD825 USD−9.1%
6.5L High Flow Water PumpQuadstar Tuning199 USD218 USD−8.7%
P400 6.5L Connecting Rod for Stock PistonsQuadstar Tuning162 USD177 USD−8.5%
Harland Sharp Roller RockersHarland Sharp559 USD606 USD−7.8%
6.5L Valve Stem Oil Seal SetAM General12 USD13 USD−7.7%
Engine Timing SetClevite Mahle98 USD105 USD−6.7%
6.5L P400 Forged CrankshaftAM General1575 USD1,687 USD−6.6%
6.2 or 6.5L DB2 Injector Line SetAM General162 USD173 USD−6.4%
Hot Shot's Secret Everyday Diesel TreatmentHotshot's Secret15 USD63 USD−6.2%

Catalogue over time

DateProductsIn stockMedian price
2026-09-0826623460 USD
2026-08-09265231674 USD

Data collected from quadstartuning.com's public product feed. Not affiliated with or endorsed by this store. Request removal.