ARP Starter Bolts
ARP stainless steel starter bolts for all 6.2L and 6.5L blocks! We recommend replacing bolts with the starter since the knurl wears out over time. These will ensure your new...
Sale price $1799 $17.99
Starter Bracket
This is a replacement for the 6.5L diesel gear reduction style starter bracket/brace. This little guy is responsible from keeping your starter bolts from shearing off or even breaking the...
Regular price $1899 $18.99
Stainless Glow Plug Heat Shields
100% tig-welded 304 stainless steel replacements for your rotted out originals. These fit factory and upgraded glow plug harnesses to complete your maintenance job and build it like it should...
Regular price $6499 $64.99
Valve Cover Stud Kit
Set of 16 Studs and matching nuts to replace factory valve cover stud/nut combos. Eliminate gasket alignment issues and facilitate quick/easy valve cover installation on your 6.2 or 6.5L diesel...
Regular price $3200 $32.00
6.5L VALVE COVER PLATE & STUD KIT
Valve Cover Hold Down Bracket to prevent warping and leaks. If you worked for the military in the past, you may have perfected the valve cover installation technique, but for most...
Regular price $19999 $199.99
Turbo Downpipe Exhaust Clamp
Stainless steel quick release style v-band clamp to replace or upgrade factory clamps. These feature a heavy duty design with larger 5/16" retaining bolt. The quick-release design also allows much easier...
Regular price $1799 $17.99
Threaded Coolant Block Plate
Our custom coolant port block off plates. Perfect for adding gauges or sensors to the back of either cylinder head. Laser cut from 3/8" steel, they are thicker than a...
Sale price $1749 $17.49
6.5L CDR Valve
Brand New CDR Valve. This is the valve that sits on the passenger side valve cover of the 6.5L turbo diesel, it is the most likely cause for excessive oil...
Regular price $9500 $95.00
Engine Lift Plate
Another Quadstar exclusive! We originally made these to use around the shop but they worked so well that we want to share them with you! Constructed of heavy-gauge steel, these are built...
Regular price $5999 $59.99
Battery Relocation Tray
A heavy steel battery tray used to safely move your passenger front battery to the side of the fender. This is a common change to make in order to re-locate...
Regular price $6994 $69.94
Quadstar Flex Fit Hat
Genuine FlexFit Trucker Style Hats embroidered with the Quadstar Tuning Logo One size fits most - 6 7/8"-7 1/2"
Sale price $2499 $24.99
Lower Intake Manifold
We have a few of these pristine lower intake manifolds for 6.5 turbo diesels. They are sandblasted and 100% ready to paint, powder-coat, or bolt on as-is. No broken tabs...
Regular price $29997 $299.97
Center Turbo Oil Drain Blockoff Plate
This custom S plate is used to block off the oil ports on a 6.5L center turbo style engine block when the ports are not needed. Fits GM, GEP, IHI...
Regular price $1900 $19.00
Quadstar Tuning Gift Card
Shopping for someone else but not sure what to give them? Give them the gift of choice with a Quadstar Tuning LLC gift card. Gift cards are delivered by email...
Regular price $2500 $25.00
Refurbished Thermostat Housings
We have a few various refurbished thermostat crossover housings available as replacement items for these parts that are NLA from GM. All of these are originally from 6.5 turbo motors...
Sale price $25000 $250.00
Fluidampr Spacer Ring
This is the SPACER ONLY for a 6.2 or 6.5L Fluidampr. There are two part numbers for Fluidamprs for this application and both kits use the same damper but one...
Regular price $500 $5.00