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FSD26 IS LIVE: Every $1 spent = 150 entries to win a 2024 F-350 Limited + $20,000 cash.
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Yukon Gear & Axle

Yukon Gear Hardcore Diff Cover for 8.5inch GM Rear w/ 5/16inch Cover Bolts

SKU: YUKYHCC-GM8.5-S
$275.99

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This purchase enters you to win the FSD26 truck: a 2024 F-350 Limited + $20,000 cash. Ends October 18. See the truck

Yukon Hardcore Diff Covers are constructed from thick-walled, high-strength nodular steel to protect lockers, gears and axles from the most extreme hits in off road driving. They also increase the structural rigidity of the differential, reducing deflection under high-torque situations that can put severe loads on vital internal parts. Yukon Hardcore Diff Covers feature a durable powder coat finish and high strength steel fasteners for easy bolt-on installation. It’s no secret that the underside of your rig can take a beating. Remember your diff! It’s the lowest hanging fruit and very susceptible to damage… crack or break it and you’re done for the day. Upgrade to a Yukon Hardcore Diff Cover and enjoy more peace of mind on the trail.

Installation Instructions
Installation Instructions
  • Contoured inner surfaces circulate oil more rapidly for faster cooling
  • Thick-walled nodular iron construction promotes housing rigidity
  • Contrasting stainless-steel accent plate and cover bolts
  • Black powder coat finish adds durability and style
  • Fits Standard And Reverse Rotation Diffs

This Part Fits:

Year Make Model Submodel
1999-2000,2002 Cadillac Escalade Base
2002 Cadillac Escalade EXT Base
2002 Chevrolet Avalanche 1500 Base
2002 Chevrolet Avalanche 1500 North Face
2002 Chevrolet Avalanche 1500 On Road Edition
2002 Chevrolet Avalanche 1500 Z71
1972-1974,1994-1999 Chevrolet Blazer Base
1992-1993 Chevrolet Blazer Cheyenne
1987 Chevrolet Blazer Custom Deluxe
1996-2002 Chevrolet Blazer LS
1995-2001 Chevrolet Blazer LT
1988-1991 Chevrolet Blazer Scottsdale
1987-1994 Chevrolet Blazer Silverado
1994 Chevrolet Blazer Silverado Sport
1999-2001 Chevrolet Blazer Trailblazer
2001-2002 Chevrolet Blazer Xtreme
1978-1980 Chevrolet C10 Big Ten
1975-1981 Chevrolet C10 Cheyenne
1981-1986 Chevrolet C10 Custom
1975-1980 Chevrolet C10 Custom Deluxe
1981 Chevrolet C10 Deluxe
1975-1986 Chevrolet C10 Scottsdale
1975-1986 Chevrolet C10 Silverado
1972-1974 Chevrolet C10 Pickup Base
1972-1974 Chevrolet C10 Suburban Base
1981-1986 Chevrolet C10 Suburban Custom
1975-1980 Chevrolet C10 Suburban Custom Deluxe
1981 Chevrolet C10 Suburban Deluxe
1975-1980,1982,1984-1986 Chevrolet C10 Suburban Scottsdale
1975-1980,1982-1986 Chevrolet C10 Suburban Silverado
1990-1993 Chevrolet C1500 454 SS
1994-1997 Chevrolet C1500 Base
1988-1998 Chevrolet C1500 Cheyenne
1999 Chevrolet C1500 LS
1988-1992 Chevrolet C1500 Scottsdale
1988-1998 Chevrolet C1500 Silverado
1990-1998 Chevrolet C1500 WT
1992-1999 Chevrolet C1500 Suburban Base
1995-1999 Chevrolet C1500 Suburban LS
1995-1997,1999 Chevrolet C1500 Suburban LT
1992-1994 Chevrolet C1500 Suburban Silverado
1975-1977,1979-1980,1982-1986 Chevrolet C20 Suburban Silverado
1992-1994 Chevrolet C2500 Suburban Silverado
1972-1987 Chevrolet El Camino Base
1975-1977 Chevrolet El Camino Classic
1977-1978,1981-1986 Chevrolet El Camino Conquista
1972-1974 Chevrolet El Camino Custom
1979-1981 Chevrolet El Camino Royal Knight
1972-1987 Chevrolet El Camino SS
1996-2002 Chevrolet Express 1500 Base
1996-2002 Chevrolet Express 1500 LS
2001-2002 Chevrolet Express 1500 LT
1983 Chevrolet G10 Base
1975-1995 Chevrolet G10 Beauville
1981-1984,1986-1987 Chevrolet G10 Bonaventure
1975-1995 Chevrolet G10 Chevy Van
1975-1995 Chevrolet G10 Sportvan
1972-1974 Chevrolet G10 Van Base
1972-1974 Chevrolet G10 Van Sportvan
1975-1981 Chevrolet K10 Cheyenne
1981-1986 Chevrolet K10 Custom
1975-1980 Chevrolet K10 Custom Deluxe
1981 Chevrolet K10 Deluxe
1975-1986 Chevrolet K10 Scottsdale
1975-1986 Chevrolet K10 Silverado
1972-1974 Chevrolet K10 Pickup Base
1972-1974 Chevrolet K10 Suburban Base
1981-1986 Chevrolet K10 Suburban Custom
1975-1980 Chevrolet K10 Suburban Custom Deluxe
1981 Chevrolet K10 Suburban Deluxe
1975-1980,1982,1984-1986 Chevrolet K10 Suburban Scottsdale
1975-1977,1979-1980,1982-1983,1985-1986 Chevrolet K10 Suburban Silverado
1994-1997 Chevrolet K1500 Base
1988-1998 Chevrolet K1500 Cheyenne
1999 Chevrolet K1500 LS
1988-1992 Chevrolet K1500 Scottsdale
1988-1998 Chevrolet K1500 Silverado
1991 Chevrolet K1500 Sport
1990-1998 Chevrolet K1500 WT
1992-1999 Chevrolet K1500 Suburban Base
1995-1999 Chevrolet K1500 Suburban LS
1995-1997,1999 Chevrolet K1500 Suburban LT
1992-1994 Chevrolet K1500 Suburban Silverado
1975-1977,1979-1980,1982-1983,1985-1986 Chevrolet K20 Suburban Silverado
1992-1994 Chevrolet K2500 Suburban Silverado
1976 Chevrolet K5 Blazer Base
1975-1980 Chevrolet K5 Blazer Cheyenne
1981-1986 Chevrolet K5 Blazer Custom
1975,1977-1980 Chevrolet K5 Blazer Custom Deluxe
1981 Chevrolet K5 Blazer Deluxe
1984 Chevrolet K5 Blazer Scottsdale
1978,1980-1986 Chevrolet K5 Blazer Silverado
1975-1980 Chevrolet P10 Base
1975-1980 Chevrolet P10 Step-Van
1972-1974 Chevrolet P10 Van Base
1987 Chevrolet R10 Custom Deluxe
1987 Chevrolet R10 Scottsdale
1987 Chevrolet R10 Silverado
1987 Chevrolet R10 Suburban Custom Deluxe
1987-1988 Chevrolet R10 Suburban Scottsdale
1987-1988 Chevrolet R10 Suburban Silverado
1989-1991 Chevrolet R1500 Suburban Scottsdale
1989-1991 Chevrolet R1500 Suburban Silverado
1987-1988 Chevrolet R20 Suburban Silverado
1989-1991 Chevrolet R2500 Suburban Silverado
1999-2002 Chevrolet Silverado 1500 Base
1999-2002 Chevrolet Silverado 1500 LS
1999-2002 Chevrolet Silverado 1500 LT
2002 Chevrolet Silverado 1500 WT
2001-2002 Chevrolet Silverado 1500 HD LS
2001-2002 Chevrolet Silverado 1500 HD LT
1999-2002 Chevrolet Silverado 2500 Base
1999-2002 Chevrolet Silverado 2500 LS
1999-2002 Chevrolet Silverado 2500 LT
2001-2002 Chevrolet Silverado 2500 HD Base
2001-2002 Chevrolet Silverado 2500 HD LS
2001-2002 Chevrolet Silverado 2500 HD LT
2001-2002 Chevrolet Silverado 3500 Base
2001-2002 Chevrolet Silverado 3500 LS
2001-2002 Chevrolet Silverado 3500 LT
2000-2001 Chevrolet Suburban 1500 Base
2000-2002 Chevrolet Suburban 1500 LS
2000-2002 Chevrolet Suburban 1500 LT
2002 Chevrolet Suburban 1500 Z71
1995-2001 Chevrolet Tahoe Base
2000 Chevrolet Tahoe Limited
1995-2002 Chevrolet Tahoe LS
1995-2002 Chevrolet Tahoe LT
2000,2002 Chevrolet Tahoe Z71
1987 Chevrolet V10 Custom Deluxe
1987 Chevrolet V10 Scottsdale
1987 Chevrolet V10 Silverado
1987 Chevrolet V10 Suburban Custom Deluxe
1987-1988 Chevrolet V10 Suburban Scottsdale
1987-1988 Chevrolet V10 Suburban Silverado
1989-1991 Chevrolet V1500 Suburban Scottsdale
1989-1991 Chevrolet V1500 Suburban Silverado
1987-1988 Chevrolet V20 Suburban Silverado
1989-1991 Chevrolet V2500 Suburban Silverado
1975-1978 GMC C15 Base
1977-1978 GMC C15 Heavy Half
1975-1978 GMC C15 High Sierra
1977 GMC C15 Indy Hauler
1975-1978 GMC C15 Sierra Classic
1975-1978 GMC C15 Sierra Grande
1978 GMC C15 Street Coupe
1975-1978 GMC C15 Suburban Base
1975-1978 GMC C15 Suburban High Sierra
1975-1978 GMC C15 Suburban Sierra Classic
1975-1978 GMC C15 Suburban Sierra Grande
1972-1974 GMC C15/C1500 Pickup Base
1972-1974 GMC C15/C1500 Suburban Base
1979-1986 GMC C1500 Base
1979-1980 GMC C1500 Heavy Half
1979-1986 GMC C1500 High Sierra
1988-1993 GMC C1500 Sierra
1979-1986 GMC C1500 Sierra Classic
1979-1982 GMC C1500 Sierra Grande
1997 GMC C1500 Sierra GT
1994-1999 GMC C1500 Sierra SL
1988-1999 GMC C1500 Sierra SLE
1994-1999 GMC C1500 Sierra SLT
1988-1993 GMC C1500 Sierra SLX
1994-1998 GMC C1500 Sierra Special
1979-1982 GMC C1500 Street Coupe
1979-1986,1992-1999 GMC C1500 Suburban Base
1979-1986 GMC C1500 Suburban High Sierra
1979-1986 GMC C1500 Suburban Sierra Classic
1979-1982 GMC C1500 Suburban Sierra Grande
1992-1999 GMC C1500 Suburban SLE
1995-1999 GMC C1500 Suburban SLT
1975-1978 GMC G15 Rally
1975-1978 GMC G15 Rally STX
1975-1978 GMC G15 Vandura
1979-1995 GMC G1500 Rally
1983-1984 GMC G1500 Rally Custom
1979-1995 GMC G1500 Rally STX
1979-1995 GMC G1500 Vandura
1972-1996 GMC Jimmy Base
2000-2001 GMC Jimmy Diamond Edition
1998-2000 GMC Jimmy Envoy
1975-1985 GMC Jimmy High Sierra
1975-1990 GMC Jimmy Sierra Classic
1975-1982 GMC Jimmy Sierra Grande
1995-1999,2001 GMC Jimmy SL
1992-2001 GMC Jimmy SLE
1993-2001 GMC Jimmy SLS
1992-2001 GMC Jimmy SLT
1978-1982 GMC Jimmy Street Coupe
1975-1978 GMC K15 Base
1975-1978 GMC K15 High Sierra
1977 GMC K15 Indy Hauler
1975-1978 GMC K15 Sierra Classic
1975-1978 GMC K15 Sierra Grande
1975-1978 GMC K15 Suburban Base
1975-1978 GMC K15 Suburban High Sierra
1975-1978 GMC K15 Suburban Sierra Classic
1975-1978 GMC K15 Suburban Sierra Grande
1972-1974 GMC K15/K1500 Pickup Base
1979-1986 GMC K1500 Base

Customer Reviews

Overall rating: 4.7 / 5 from 536 reviews.

Customer photo review of FSD 1998.5- Present 24V Cummins Clamp Lock Head Stud Kit

First off super happy with the product from quality to fit. This was my first install and it was quite easy all the necessary hardware was there. I was looking for mid price head studs and I’ll say I love them I have a 100% and a s480 I’ve had no problems with it and I beat on it every day. 10/10 recommend.

Jacob O. 5/5 Verified

FSD 1998.5- Present 24V Cummins Clamp Lock Head Stud Kit

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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