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GM 8.6 REAR

99-up C/K 1500 pickups

99-up C/K 1500 Suburban

99-up G1500 Vans

99-up Tahoe/Envoy

99-04 Blazer,S10 ZR2 (30 spline)

99-up fullsized GM cars

Cover bolts: 10

Ring gear diameter: 8.6”

Pinion shaft diameter: 1.625/30

Axle shaft diameter/splines: 1.28/30

Available ratios: 2.73, 2.76, 2.93, 3.08, 3.23, 3.42, 3.73, 3.90, 4.11, 4.56, 4.88, 5.13, 5.38, 5.57


 
Part NamePart CategoryConditionPrice
Coming SoonGear Lube and AdditivesNew$0.00
Coming Soon

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IWE Rear Ends Only
IWE Rear Ends Only
Part NamePart CategoryConditionPrice
GM 8.6 OEM Gov-Lok Posi-tracPosi-tracs / Limited SlipsNew$595.00
This is a GM 8.6 10 BOLT Eaton Gov-Lok Posi Trac. This posi-trac will fit the following vehicles 99.5-up C1500,K1500 Pickups, Suburban, G1500 Vans, Yukon,Tahoe, Envoy, and 2000-04 Blazer,S10 ZR-2 (30 spline) You can also install this posi-trac into an 8.5" 10 Bolt 89 to 98 differential when you change the carrier bearings. LM

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IWE Rear Ends Only
IWE Rear Ends Only
Part NamePart CategoryConditionPrice
GM 8.6 Rear Bearing Kit 99-08Bearing KitsNew$175.00
This kit includes OEM Timken bearings and races along with high quality seals and small parts. Included in this kit are carrier bearings and races, pinion bearings and races, pinion seal, complete master shim kit, ring gear bolts, pinion nut, crush sleave, thread locking compound, marking compound with brush. These

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IWE Rear Ends Only
IWE Rear Ends Only
Part NamePart CategoryConditionPrice
GM 8.6 Rear Bearing Kit 09-NewerBearing KitsNew$225.00
This kit includes OEM Timken bearings and races along with high quality seals and small parts. Included in this kit are carrier bearings and races, pinion bearings and races, pinion seal, complete master shim kit, ring gear bolts, pinion nut, crush sleave, thread locking compound, marking compound with brush. These

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IWE Rear Ends Only
IWE Rear Ends Only
Part NamePart CategoryConditionPrice
Eaton Posi-Trac GM 8.6 Rear 30 Spline Posi-tracs / Limited SlipsNew$695.00
Eaton is your traction control solution. With an Eaton you get bullet proof performance, Advanced clutch technology, high impact precision-forged gears, race-bred carbon fiber friction discs, high strength nodular iron case and a 1 year manufactures warranty. This unit is rebuildable. This eaton posi fits a GM 8.6 rear differential

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IWE Rear Ends Only
IWE Rear Ends Only
Part NamePart CategoryConditionPrice
Eaton ELocker GM 8.6 Rear 30 SplineElectric LockersNew$950.00
The Elockers electromagnetic locking mechanism is the next generation of aftermarket differential technology. Performs as an open differential until you decide that you need more traction. Eaton Elocker is your push buttom solution to almost any traction problem. when locked the Elocker performs as a full locker,

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IWE Rear Ends Only
IWE Rear Ends Only
Part NamePart CategoryConditionPrice
Yukon Duragrip GM 8.6 Rear 30 Spline 3.23-up RatiosPosi-tracs / Limited SlipsNew$595.00
Yukon Duragrip positraction for a GM 8.6 rear with 30 spline axles will fit 3.23-up ratios. THE YUKON DURAGRIP USES A NODULAR IRON CASE AND FORGED 4130 INTERNALS FOR ADDED STRENGTH ALONG WITH COMPOSITE CLUTCHES FOR HIGH PERFORMANCE AND LONG LIFE. ALL UNITS ARE REBUILDABLE AND MANY OFFER UPGRADES TO

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IWE Rear Ends Only
IWE Rear Ends Only
Part NamePart CategoryConditionPrice
Detroit Locker GM 8.6 Rear 30 Spline LockersNew$950.00
The Detroit Locker maximizes traction by delivering 100% of the torque to both drive wheels. It is engineered to keep both wheels in a constant drive mode, and has the ability to automatically allow wheel speed differention when required. Applications are also available for C-Clip style axles. No other performance

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IWE Rear Ends Only
IWE Rear Ends Only
Part NamePart CategoryConditionPrice
Eaton OEM ELocker GM 8.6Electric LockersNew Takeout$495.00
GENERAL MOTORS OEM EATON ELOCKER. FITS 8.6 REAR DIFFERENTIAL 00-08. FITS 8.5 REAR DIFFERENTIAL 88-98 (MUST USE HD CARRIER BEARINGS) 30 SPLINE ONLY. THIS UNIT IS A NEW TAKE OUT, THEY WERE TAKEN OUT OF BRAND NEW GM DIFFERENTIAL NEVER DRIVEN. Part numbers on unit are 06C8, 417, 40058725, 070 090217A.

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IWE Rear Ends Only
IWE Rear Ends Only
Part NamePart CategoryConditionPrice
Detroit Truetrac GM 8.6 30 splinePosi-tracs / Limited SlipsNew$650.00
Eaton's Detroit Truetrac was the first heilcal gear differential ever introduced into the automotive aftermarket. It remains the leading helical gear-type limited slip differential in the industry. Its helical gear design eliminates the need for wearable parts, resulting in maintenance free traction. Recongnized not only for its durability but also

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IWE Rear Ends Only
IWE Rear Ends Only