1978 GMC Yukon Gear Parts
Choose a Model for your 1978 GMC
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- 8.5in./8.6in. GM 2.73/Up Dura Grip Limited Slip; 30spl; Composite Clutches
- 8.6 in. 10 Bolt; 30 Spline; 2.73 And Up GM 8.5 in.; 30 Spline; 2.73 And Up~Yukon Dura Grip Positraction / Limited Slip; GM 8.5 in. Front; 30 Spline; 2.73 And Up; 1.781 in. Bearing Journal
- Yukon Dura Grip is a positraction limited slip differential that provides smooth yet aggressive traction; giving you the confidence and performance you need across a wide variety of terrains.
- Yukon Dura Grip Differential
- Product Attributes:
- WARNING CA Proposition 65: Yes
- WARNING CA Proposition 65 Message: Warning: This Product Can Expose You To Chemicals Including Arsenic; Which Is Known To The State Of California To Cause Cancer. For More Information; Go To Www.p65warnings.ca.gov.
-
Features:
- Fits 8.5 in./8.6 in. GM w/30 Spline Axles
- Fits 2.73 Gear Ratio Up
- Fully Rebuildable Design And Proudly Assembled In The USA
- Limited Slip Differential w/Composite Clutches
- All Units Are Backed By Extensive Product Testing And State-Of-The-Art Software Design
- Yukon Dura Grips Feature 4320 Chromoly Spider Gears For Ultimate Durability
- Yukon Dura Grip is a positraction limited slip differential that provides smooth yet aggressive traction, giving you the confidence and performance you need across a wide variety of terrains. The Dura Grip is engineered for long life and is completely rebuildable. Dura Grips are constructed with a high strength nodular case, forged 4320 chromoly spider gears, and composite clutches. For unmatched positraction performance, the Dura Grip is the ultimate choice. When your vehicle demands performance, durability and strength, choose Yukon Dura Grip.
Additional Fitment Information:
| Vehicle | Block | CC | Position | Engine | CID |
|---|---|---|---|---|---|
| 1978 - GMC K25 Suburban | V | - | Front | 8 Cyl 6.6L | 400 |
- 8.5in./8.6in. GM 2.73/Up Dura Grip Limited Slip; 30spl; Composite Clutches
- 8.6 in. 10 Bolt; 30 Spline; 2.73 And Up GM 8.5 in.; 30 Spline; 2.73 And Up~Yukon Dura Grip Positraction / Limited Slip; GM 8.5 in. Front; 30 Spline; 2.73 And Up; 1.781 in. Bearing Journal
- Yukon Dura Grip is a positraction limited slip differential that provides smooth yet aggressive traction; giving you the confidence and performance you need across a wide variety of terrains.
- Yukon Dura Grip Differential
- Product Attributes:
- WARNING CA Proposition 65: Yes
- WARNING CA Proposition 65 Message: Warning: This Product Can Expose You To Chemicals Including Arsenic; Which Is Known To The State Of California To Cause Cancer. For More Information; Go To Www.p65warnings.ca.gov.
-
Features:
- Fits 8.5 in./8.6 in. GM w/30 Spline Axles
- Fits 2.73 Gear Ratio Up
- Fully Rebuildable Design And Proudly Assembled In The USA
- Limited Slip Differential w/Composite Clutches
- All Units Are Backed By Extensive Product Testing And State-Of-The-Art Software Design
- Yukon Dura Grips Feature 4320 Chromoly Spider Gears For Ultimate Durability
- Yukon Dura Grip is a positraction limited slip differential that provides smooth yet aggressive traction, giving you the confidence and performance you need across a wide variety of terrains. The Dura Grip is engineered for long life and is completely rebuildable. Dura Grips are constructed with a high strength nodular case, forged 4320 chromoly spider gears, and composite clutches. For unmatched positraction performance, the Dura Grip is the ultimate choice. When your vehicle demands performance, durability and strength, choose Yukon Dura Grip.
Additional Fitment Information:
| Vehicle | Block | CC | Position | Engine | CID |
|---|---|---|---|---|---|
| 1978 - GMC K25 Suburban | V | - | Rear | 8 Cyl 5.0L | 305 |
- Yukon Positraction internals for Dana 44 Dura Grip Posi; 30 spline.
- Dana 44; 30 Splines Dana 44; Standard Rotation; 30 Splines~Dura Grip Posi Carrier Gear Kit
- Yukon Positraction internals for Dana 44 Dura Grip Posi; 30 spline. Does not include clutches. Does NOT fit Trac Loc or Power Lok. Fits Dura Grip ONLY.
- Spider Gear Set
- Product Attributes:
- WARNING CA Proposition 65: No
-
Features:
- Fits Dana Spicer 44 w/Dura Grip Positraction
- Spider Gear Kit
- Includes Two Side Gears
- Four Pinion Gears
- Cross Pin Shaft
- Roll Pin And Spider Gear Thrust Washers
- Yukon Gear & Axle spider gear kits utilize the highest quality materials and best production techniques in the industry to ensure a longer lasting spider gear set. Kit delivers everything needed for a complete and proper spider gear set replacement.
Additional Fitment Information:
| Vehicle |
|---|
| 1978 - GMC K25 |
- Yukon Pinion install kit for Dana 60 front differential
- Dana 60/Reverse/Irregular Cover; Includes Timken Pinion Bearings/Races/Pilot Bearing If Applicable/Crush Sleeve If Applicable Dana 60; Standard Rotation; Includes Timken Pinion Bearings/Races/Pilot Bearing If Applicable/Crush Sleeve If Applicable
- Yukon Pinion installation kits are a great solution for gear installation on lower mileage vehicles where the carrier bearings/races can be reused. This kit uses Timken bearings/races along with a high quality pinion seal/small parts
- Pinion Install Kit
- Product Attributes:
- WARNING CA Proposition 65: Yes
- WARNING CA Proposition 65 Message: Warning: This Product Can Expose You To Chemicals Including Arsenic; Which Is Known To The State Of California To Cause Cancer. For More Information; Go To Www.p65warnings.ca.gov.
-
Features:
- Fits Dana Spicer 60 Front
- Includes Are Pinion Bearings/Races
- Pinion Seal
- Crush Sleeve
- Complete Pinion Shim Kit
- And Marking Compound w/Brush
- Yukon Pinion Installation Kits are a terrific solution for gear installation on lower mileage vehicles where the carrier bearings and races can be reused. This kit features Timken bearings and races along with high-quality seals and small parts. Yukon does extensive research for each application to make sure your kit will arrive with all the correct parts you need to install your gear set.
Additional Fitment Information:
| Vehicle |
|---|
| 1978 - GMC K35 |
- Yukon Chromoly Outer Front Axle for Dana 60/Dana 70; 35 Spline; 12in. Long
- Dana 60; 35 Spline; 12 in. Length Dana 60 Standard Rotation Front; Outer Stub Axle; 4340 Chromoly; 35 Spline; 12 in. Length~Dana 60; Standard Rotation; 35 Spline; 12 in. Length
- Yukon performance axles are built with high-tensile strength 4340 chromoly; use superior production methods that include cold roll formed splines; and feature advanced heat treating to create an axle of unmatched quality and durability.
- Stub Axle
- Product Attributes:
- WARNING CA Proposition 65: No
-
Features:
- Fits Dana 60 Dana 70 Differentials
- 35 Spline
- Measures 12 in. Long
- Heavy Duty 4340 Chromoly Construction
- Uses 5-332X Series U-Joint
- Front Outer Axle
- Yukon high-performance axles are built with high-tensile strength 4340 chromoly, use superior production methods that include cold roll formed splines, and feature advanced induction coil heat treating to create an axle of unmatched quality and durability.
This Part Fits the Following OEM/Substitute Numbers:
ZA W46100
Additional Fitment Information:
| Vehicle | Position |
|---|---|
| 1978 - GMC K35 | Front Outer |
- Yukon Positraction internals for Dana 44 Dura Grip Posi; 30 spline.
- Dana 44; 30 Splines Dana 44; Standard Rotation; 30 Splines~Dura Grip Posi Carrier Gear Kit
- Yukon Positraction internals for Dana 44 Dura Grip Posi; 30 spline. Does not include clutches. Does NOT fit Trac Loc or Power Lok. Fits Dura Grip ONLY.
- Spider Gear Set
- Product Attributes:
- WARNING CA Proposition 65: No
-
Features:
- Fits Dana Spicer 44 w/Dura Grip Positraction
- Spider Gear Kit
- Includes Two Side Gears
- Four Pinion Gears
- Cross Pin Shaft
- Roll Pin And Spider Gear Thrust Washers
- Yukon Gear & Axle spider gear kits utilize the highest quality materials and best production techniques in the industry to ensure a longer lasting spider gear set. Kit delivers everything needed for a complete and proper spider gear set replacement.
Additional Fitment Information:
| Vehicle |
|---|
| 1978 - GMC K25 |
- Yukon Rear Axle Bearing/Seal Kit for Various Differentials
- 8.8 in./8.5 in./8.6 in. 10 Bolt; AMC 35; Torrington Brand; 2.530 in. OD. GM 12 Bolt Truck; Torrington Brand; 2.530 in. OD.
- Yukon axle bearing/seal kits are specially designed for each application/use all high quality bearings/seals.
- Axle Bearing/Seal Kit
- Product Attributes:
- WARNING CA Proposition 65: No
-
Features:
- Includes Axle Bearing And Seal
- Services One Side
- 2.530 in. Outer Diameter
- 1.618 in. Inner Diameter
- Yukon axle bearing and seal kits are specially designed for each application and use high-quality bearings and seals.
-
Suggested Purchase Quantity: 2
- Most jobs typically require 2 of this item.
Additional Fitment Information:
| Vehicle | Position |
|---|---|
| 1978 - GMC G15 | Rear |
- 8.5in./8.6in. GM 2.73/Up Dura Grip Limited Slip; 30spl; Composite Clutches
- 8.6 in. 10 Bolt; 30 Spline; 2.73 And Up GM 8.5 in.; 30 Spline; 2.73 And Up~Yukon Dura Grip Positraction / Limited Slip; GM 8.5 in. Rear; 30 Spline; 2.73 And Up; 1.781 in. Bearing Journal
- Yukon Dura Grip is a positraction limited slip differential that provides smooth yet aggressive traction; giving you the confidence and performance you need across a wide variety of terrains.
- Yukon Dura Grip Differential
- Product Attributes:
- WARNING CA Proposition 65: Yes
- WARNING CA Proposition 65 Message: Warning: This Product Can Expose You To Chemicals Including Arsenic; Which Is Known To The State Of California To Cause Cancer. For More Information; Go To Www.p65warnings.ca.gov.
-
Features:
- Fits 8.5 in./8.6 in. GM w/30 Spline Axles
- Fits 2.73 Gear Ratio Up
- Fully Rebuildable Design And Proudly Assembled In The USA
- Limited Slip Differential w/Composite Clutches
- All Units Are Backed By Extensive Product Testing And State-Of-The-Art Software Design
- Yukon Dura Grips Feature 4320 Chromoly Spider Gears For Ultimate Durability
- Yukon Dura Grip is a positraction limited slip differential that provides smooth yet aggressive traction, giving you the confidence and performance you need across a wide variety of terrains. The Dura Grip is engineered for long life and is completely rebuildable. Dura Grips are constructed with a high strength nodular case, forged 4320 chromoly spider gears, and composite clutches. For unmatched positraction performance, the Dura Grip is the ultimate choice. When your vehicle demands performance, durability and strength, choose Yukon Dura Grip.
Additional Fitment Information:
| Vehicle | Block | CC | Position | Engine | CID |
|---|---|---|---|---|---|
| 1978 - GMC G25 | L | - | Front | 6 Cyl 4.8L | 292 |
- 8.5in./8.6in. GM 2.73/Up Dura Grip Limited Slip; 30spl; Composite Clutches
- 8.6 in. 10 Bolt; 30 Spline; 2.73 And Up GM 8.5 in.; 30 Spline; 2.73 And Up~Yukon Dura Grip Positraction / Limited Slip; GM 8.5 in. Rear; 30 Spline; 2.73 And Up; 1.781 in. Bearing Journal
- Yukon Dura Grip is a positraction limited slip differential that provides smooth yet aggressive traction; giving you the confidence and performance you need across a wide variety of terrains.
- Yukon Dura Grip Differential
- Product Attributes:
- WARNING CA Proposition 65: Yes
- WARNING CA Proposition 65 Message: Warning: This Product Can Expose You To Chemicals Including Arsenic; Which Is Known To The State Of California To Cause Cancer. For More Information; Go To Www.p65warnings.ca.gov.
-
Features:
- Fits 8.5 in./8.6 in. GM w/30 Spline Axles
- Fits 2.73 Gear Ratio Up
- Fully Rebuildable Design And Proudly Assembled In The USA
- Limited Slip Differential w/Composite Clutches
- All Units Are Backed By Extensive Product Testing And State-Of-The-Art Software Design
- Yukon Dura Grips Feature 4320 Chromoly Spider Gears For Ultimate Durability
- Yukon Dura Grip is a positraction limited slip differential that provides smooth yet aggressive traction, giving you the confidence and performance you need across a wide variety of terrains. The Dura Grip is engineered for long life and is completely rebuildable. Dura Grips are constructed with a high strength nodular case, forged 4320 chromoly spider gears, and composite clutches. For unmatched positraction performance, the Dura Grip is the ultimate choice. When your vehicle demands performance, durability and strength, choose Yukon Dura Grip.
Additional Fitment Information:
| Vehicle | Block | CC | Position | Engine | CID |
|---|---|---|---|---|---|
| 1978 - GMC G25 | L | - | Rear | 6 Cyl 4.8L | 292 |
- Yukon friction modifier/Posi additive
- Positraction Additive; 4 oz.
- Help keep Positraction chatter down with Yukon s popular friction modifier (Posi additive) for limited slip differentials with composite clutches like the Yukon Dura Grip.
- Friction Modifier
- Product Attributes:
- WARNING CA Proposition 65: No
-
Features:
- For Use In Any Clutch-Style Limited Slip
- Positraction Additive
- Yukon Limited Slip Friction Modifier is a proprietary Yukon blend that reduces noise and chatter in clutch driven positraction units and limited slip differentials. As clutch packs wear they can develop a chatter, our Modifier enhances the abrasive properties of the clutches to retain stock-like engagement. Formulated for composite clutches, like those found in Yukon Dura Grip LSDs, Yukon Limited Slip Friction Modifier will outperform parts store grade modifiers because they are formulated for OEM paper-style clutches and contain one-fifth the abrasive chemicals.
Additional Fitment Information:
| Vehicle |
|---|
| 1978 - GMC P15 |
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