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FSD25 WINNER: Emerson Garcia, Gonzales, LA. BMT #3 WINNER: Eric Dassinger, Wichita Falls, TX.
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QA1

QA1 67-69 F / 68-72 X Body Ford Mustang 9in Narrowed Rear Axle Assembly

SKU: QAPR901N
$3,029.99

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PRODUCT OVERVIEW Already running one of QA1's 4-Link Suspension Kits on your 1st Gen F-Body or 68-72 Nova? Now, take your build to the next level with QA1's custom 9" rear housing, engineered to integrate seamlessly with your existing QA1 setup. Designed for enthusiasts looking to improve performance and durability, this 9" housing is the perfect upgrade for handling more horsepower, and aggressive driving conditions. ENHANCE YOUR EXISTING QA1 4-LINK QA1's 9" rear housing is designed to bolt seamlessly to your QA1 4-link system, with fully formed trailing arm brackets that minimize flex under heavy loads, enhancing strength and rigidity. Whether you're increasing horsepower or seeking a more durable rear-end solution, the custom QA1 9" rear housing delivers the performance gains you need. Its bolt-on design simplifies installation, saving time in the shop. Helpful Specifications: 54-3/4" narrowed wheel mounting surface width. Narrowed 2-1/2" per side for use with mini tubs for wider wheel and tires Big Ford "New Style Torino Flanges" with 2.5" axle offset for easy brake compatibility 5x4-3/4" factory bolt pattern, standard fitment and a wide range of wheel options "x 3" wheel studs for better fit with alloy wheels 2.770" hub diameter Requires third member for Ford 9" housings with 31 spline axles EASY INSTALLATION & SERVICEABLITY QA1 is committed to delivering products that make upgrading your car as simple as possible. Our 9" housings for QA1 4-link kits are designed for a bolt-on installation, eliminating the need for custom fabrication. Servicing your 9" rear end is also straightforward, featuring a dedicated fill port, drain plug, vent port, and jack plate FITMENT NOTES Verify wheel and tire fitment on vehicle prior to installation Center section (3rd member) not included Narrowed housing recommended to be used with custom offset wheels and mini tubs Compatible only with QA1 four link suspension system

Installation Instructions
  • Formed Trailing Arm Brackets reduce flex under high loads, ensuring your suspension remains rigid
  • Durable Semi-Gloss Powder coat Finish offers long-lasting protection and a clean, sleek look
  • Includes T-bolts and Housing Studs for assembling axle shafts and installing third members
  • 31-Spline 1541H Alloy Axles support up to 650HP, with the housing handling up to 800HP
  • Drain Plug, Fill Plug, and Jack Pad come standard to make service a breeze
  • Narrowed width for maximum wheel and tire package

This Part Fits:

Year Make Model Submodel
1967-1969 Chevrolet Camaro Base
1967-1969 Chevrolet Camaro RS
1967-1969 Chevrolet Camaro SS
1967-1969 Chevrolet Camaro Z28
1968 Chevrolet Chevy II Nova
1969-1972 Chevrolet Nova Base
1967 Pontiac Firebird 326
1968-1969 Pontiac Firebird 350
1969 Pontiac Firebird 350 HO
1967-1969 Pontiac Firebird 400
1967-1969 Pontiac Firebird Base
1967-1968 Pontiac Firebird HO
1967-1969 Pontiac Firebird Sprint
1969 Pontiac Firebird Trans Am
1971-1972 Pontiac Ventura Base

Customer Reviews

Overall rating: 4.7 / 5 from 529 reviews.

Customer photo review of FSD 03-09 Dodge Cummins Billet Heat Exchanger

The billet heat exchanger looks great and is machined nicely. No worries about an internal failure allowing fluids to mix. It seems to be doing its job. It's more robust than the factory style cooler but I don’t believe it is quite as efficient based on warm up times I’m seeing. My only gripe is the bracket mounting bolts, they thread directly onto the cooler instead of passing all the way through and securing with nuts. Make sure to use thread locker along with the lock washers. As a rough guide, torque for M8 fasteners in aluminum should be 11-15 ft lbs, no torque spec is listed for the mounting hardware in the instructions.

Charles H. 4/5 Verified

FSD 03-09 Dodge Cummins Billet Heat Exchanger

Customer photo review of FSD 2003-2007 Dodge Cummins Heater Hose Kit Black Braided

It’s not bad, I was in a bind and needed a quick fix to get my truck back going. So first things first, the kit works. You can get rid of the steel lines and these will take their place. With about an hour and a half and a little research it doesn’t take much to get these hoses installed. However, I have some gripes about this kit. 1. You have to be very careful about how the lines are run to prevent the hose from kinking. 2. There are no p clamps or hardware included to hold the lines in place. To improve this kit, I’d toss some hose clamps, a couple bolts with some p clamps to hold the hose, maybe a couple pictures on where to run things too, or even total install instructions. Stiffer hose would be good too, in my pictures you can see that the hose going to the front of the engine is trying to kink as it makes the bend to run beside the turbo.

Noah T. 3/5 Verified

FSD 2003-2007 Dodge Cummins Heater Hose Kit Black Braided

Customer photo review of Kingspeed Billet Front Cover 94-02

It came with no gaskets this item deff needs to be sold with cover gasket as well as the seal for the crank even a plug for the vent or a fitting to hook a tube to the vent. Didn’t come with shit but bolts. Now I got to track everything else down seperatly makes it a pain in the ass. At this point I’d rather have stayed stock

Jacob M. 3/5 Verified

Kingspeed Billet Front Cover 94-02

Customer photo review of FSD 2010-2012 Dodge Cummins Factory Replacement Transmission Line Kit Black Braided

I installed them when I built my transmission. Hoses are good quality but fittings felt kind of cheap. Not a bad kit at all. I’d recommend it to anyone. Substantial trans temp difference after putting them on. My trans runs a lot cooler now that I’ve bypassed the heat exchanger. 2012 ram 2500 with 68rfe. 9/10 would recommend. Just be gentle with the fittings

Max F. 4/5 Verified

FSD 2010-2012 Dodge Cummins Factory Replacement Transmission Line Kit Black Braided

Customer photo review of FSD 03-09 Dodge Cummins Elite Drop-In Transmission Cooler Kit

I installed this cooler and a few weeks later got into a wreck that was able to damn near total my truck, the frame is bent in 4 places and it shifted my ranch and bumper a foot. This cooler was the only radiator that survived everything else was destroyed and wrapped around the cooler. I called customer support and was able to order new stainless steel brackets and this cooler will live again. I’m very impressed with the quality and strength of this part and would gladly buy it for another truck.

Fritz G. 5/5

FSD 03-09 Dodge Cummins Elite Drop-In Transmission Cooler Kit

Customer photo review of Kingspeed 06-Current Dodge Ram Billet Budget Builder Valve Cover

I love the product. I am just upset that it wasn’t clear it doesn’t come with any hardware. I currently have no clue what barb fittings and hose sizes I need to get for the valve cover to my catch can. I am currently using a hardware store setup as this is my first Cummins and my first quality build of a truck. If there’s anyway you could assist me or point me in the right direction that would be awesome. Aside from that I’ve had nothing but compliments on it, I actually won top 10 truck and SCT x GFP in Nashville a few weeks back. Everyone including myself love the valve cover.

Caleb H. 3/5 Verified

Kingspeed 06-Current Dodge Ram Billet Budget Builder Valve Cover

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