1975 GMC K15 Differentials

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Keep Your 1975 GMC K15 in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1975 GMC K15 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Oil, Rear Differential Cover Gaskets, and Differential Covers. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Top-Rated Differentials from Trusted Brands

Looking for a reliable Differential? We’ve got you covered with options from brands you know and trust like Driveworks, National, and Motive Gear. For example, Driveworks Differentials start at just $8.99 with an average 4.2 star rating. National and Motive Gear offer similar pricing and quality, backed by strong customer feedback. With over 220 reviews and a solid 4.2 star average, you can shop with confidence knowing other GMC K15 owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1975 GMC K15 Differential at Advance Auto Parts is around $196.06, with a range that starts at $0.91 and goes up to $1,302.99. With 274 options in stock from 16 trusted brands, finding the right fit is easy. Popular picks like Yukon Gear 3 Qt – Penzoil 80W90 Conventional Gear Oil, 15002, Felpro Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket, RDS 6629, and National Differential Pinion Seal, 5778 start at just $7.99 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Differential, don’t forget to check out other key components like 4WD Components and Universal Joints. At Advance Auto Parts, we’re here to help you keep your 1975 GMC K15 in peak condition, inside and out.

Essential 1975 GMC K15 Differentials

Yukon Gear – Yukon Gear Seal Housing for Dana 44, Zip Locker, with O-Rings, 34013 (Part No.34013)

Yukon Gear Seal Housing for Dana 44, Zip Locker, with O-Rings, 34013

from

$83.99
The Yukon Zip Locker is the latest in on-demand traction. Its air-operated design allows you to switch from an open differential to 100% lockup when you need it, giving you the ultimate in driver select ability.
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Pro-King – Pro-King Differential Pinion Gear Washer, 742G216 (Part No.742G216)

Pro-King Differential Pinion Gear Washer, 742G216

from

$2.59
Pro-King is the leading supplier of transmission and driveline products in the aftermarket.
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Pro-King – Pro-King Differential Cross Shaft, 742G930 (Part No.742G930)

Pro-King Differential Cross Shaft, 742G930

from

$2.99
Pro-King is the leading supplier of transmission and driveline products in the aftermarket.
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Powertrax – Powertrax Grip LS Traction System, LS231230 (Part No.LS231230)

Powertrax Grip LS Traction System, LS231230

from

$480.99
For vehicles that are driven daily, the Powertrax No-Slip Traction System is the latest design in quiet traction-adding differential technology. It combines the automatic street-friendly smooth operation of a limited-slip differential with the traction performance of a locking differential. The Powertrax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!
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Powertrax – Powertrax Differential Lock Assembly, 9207883005 (Part No.9207883005)

Powertrax Differential Lock Assembly, 9207883005

from

$551.99
For vehicles that are driven daily, the Power Trax No-Slip Traction System is the latest design in quiet traction-adding differential technology. It combines the automatic street-friendly smooth operation of a limited-slip differential with the traction performance of a locking differential. The Power Trax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Power Trax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Power Trax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds.
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National – National Shaft Repair Sleeve, 99138 (Part No.99138)

National Shaft Repair Sleeve, 99138

from

$30.99
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.
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Motive Gear – Motive Gear Ring Gear Bolt, 14066913 (Part No.14066913)

Motive Gear Ring Gear Bolt, 14066913

from

$2.99
Motive Gear Ring Gear Bolt, 14066913.
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Yukon Gear – Yukon Gear Pinion Install Kit for GM 12 Bolt Truck Differential, 13057 (Part No.13057)

Yukon Gear Pinion Install Kit for GM 12 Bolt Truck Differential, 13057

from

$232.99
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.
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Yukon Gear – Yukon Gear Zip Locker Bulkhead Quick-Disconnect Fitting, 34038 (Part No.34038)

Yukon Gear Zip Locker Bulkhead Quick-Disconnect Fitting, 34038

from

$18.99
Yukon right hand axle for ’10-’14 Ford F150 SVT Raptor front, 31 spline.
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Yukon Gear – Yukon Gear Bearing Race Driver for Popular Ford, Gm, Chrysler, and Dana Differentials, 56017 (Part No.56017)

Yukon Gear Bearing Race Driver for Popular Ford, Gm, Chrysler, and Dana Differentials, 56017

from

$215.99
Yukon Gear & Axle offers a full line of top quality differential tools to save time and money.
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Yukon Gear – "Yukon Gear Pinion Depth Shims for GM 7.5"", 7.75"", 8.2"" & 12 Bolt Truck, 55008" (Part No.55008)

"Yukon Gear Pinion Depth Shims for GM 7.5"", 7.75"", 8.2"" & 12 Bolt Truck, 55008"

from

$21.99
Yukon shim kits are precision machined and tailored for each individual application to ensure you have the right shims for every set up.
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USA Standard Gear – USA Standard Gear Differential Rebuild Kit, 37056 (Part No.37056)

USA Standard Gear Differential Rebuild Kit, 37056

from

$226.99
USA Standard Master Overhaul kits let you finish your install with confidence. This kit uses Koyo bearings and races. Included are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve (if applicable), oil baffles and slingers (if applicable), threading locking compound, marking compound with brush and gasket.
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Yukon Gear – Yukon Gear Replacement Carrier Shim Kit For Dana Spicer 44, 30 Spline Axles, 55010 (Part No.55010)

Yukon Gear Replacement Carrier Shim Kit For Dana Spicer 44, 30 Spline Axles, 55010

from

$15.99
Yukon 1541H alloy replacement rear axle for Dana 80, 37 spline (34.0-36.5) Full float axle (8X3.96). Yukon 1541H alloy axles offer a strength increase over stock while retaining a low cost. Yukon 1541H alloy rear axles come with a one year warranty against manufacturing defects. This is a full-floating axle.
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USA Standard Gear – USA Standard Gear Differential Spider Gear Kits, 39026 (Part No.39026)

USA Standard Gear Differential Spider Gear Kits, 39026

from

$209.99
USA Standard Master Overhaul kits let you finish your install with confidence. This kit uses Koyo bearings and races. Included are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve (if applicable), oil baffles and slingers (if applicable), threading locking compound, marking compound with brush and gasket.
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Yukon Gear – Yukon Gear Pinion Nut washer, 33167 (Part No.33167)

Yukon Gear Pinion Nut washer, 33167

from

$14.99
Yukon Gear & Axle manufactures a full line of top quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers and much, much more. For all your differential small parts needs, look no further than Yukon.
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Motive Gear – Motive Gear Differential Mini Spool, MS12C (Part No.MS12C)

Motive Gear Differential Mini Spool, MS12C

from

$108.99
Motive Gear Differential Mini Spool, MS12C.
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Yukon Gear – "Yukon Gear Ltd. Slip Clutch Guide, Chry 9.25/Dana 44/50/GM 12 Bolt/8.2""/8.5""/8.6""/Nis M226, 33352" (Part No.33352)

"Yukon Gear Ltd. Slip Clutch Guide, Chry 9.25/Dana 44/50/GM 12 Bolt/8.2""/8.5""/8.6""/Nis M226, 33352"

from

$8.99
Yukon Gear & Axle manufactures a full line of top quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers and much, much more. For all your differential small parts needs, look no further than Yukon.
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Richmond Gear – Richmond Gear Differential Ring And Pinion, 49-0072-1 (Part No.49-0072-1)

Richmond Gear Differential Ring And Pinion, 49-0072-1

from

$350.99
Richmond Gear is the leading manufacturer of professional quality, high-performance drivetrain products. Our complete line of products ranges from high performance ring-and-pinion sets for serious street and racing applications to torque-hungry manual transmissions and components. Richmond Gear products have been winners both at the Daytona 500 and U.S. Nationals for decades. WINNERS RUN RICHMOND!
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Motive Gear – Motive Gear Differential Crush Sleeve, 3954482 (Part No.3954482)

Motive Gear Differential Crush Sleeve, 3954482

from

$5.99
Motive Gear Differential Crush Sleeve, 3954482.
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Yukon Gear – Yukon Gear Dana 44 Inner Axle Replacement, 21050 (Part No.21050)

Yukon Gear Dana 44 Inner Axle Replacement, 21050

from

$199.99
Yukon Gear & Axle offers an extensive line of general replacement and high-performance axles for passenger car, truck and SUV applications. High quality alloys and the latest in heat-treating technologies provide a stronger-than-stock axle for off-road, on the street, or at the track.
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Yukon Gear – "Yukon Gear Replacement Floater Roll Pin for Dana 44 & 8.75"" Chrysler Power Lok, 33326" (Part No.33326)

"Yukon Gear Replacement Floater Roll Pin for Dana 44 & 8.75"" Chrysler Power Lok, 33326"

from

$5.99
Yukon Gear & Axle manufactures a full line of top quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers and much, much more. For all your differential small parts needs, look no further than Yukon.
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Schaeffler – Schaeffler Tapered Roller Bearing, KT63 (Part No.KT63)

Schaeffler Tapered Roller Bearing, KT63

from

$25.99
Our wheel seals are engineered using only the highest-quality materials to meet vehicle manufacturer specificatons. We work with suppliers to design seals that meet FAG’s quality standards. Seals are designed to protect wheel end components from contamination – such as dirt, dust, and moisture – and prevent the loss of grease over the life of the bearing. The specifications for wheel seals are very demanding, and the type required depends on the specific application, position and vehicle class.
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Pro-King – Pro-King Differential Cross Shaft, 742G673 (Part No.742G673)

Pro-King Differential Cross Shaft, 742G673

from

$28.49
Pro-King is the leading supplier of transmission and driveline products in the aftermarket.
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Richmond Gear – Richmond Gear Differential Pinion Shaft, CSPD44 (Part No.CSPD44)

Richmond Gear Differential Pinion Shaft, CSPD44

from

$26.99
Richmond Gear is the leading manufacturer of professional quality, high-performance drivetrain products. Our complete line of products ranges from high performance ring-and-pinion sets for serious street and racing applications to torque-hungry manual transmissions and components. Richmond Gear products have been winners both at the Daytona 500 and U.S. Nationals for decades. WINNERS RUN RICHMOND.
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Yukon Gear – Yukon Gear Replacement Clutch Set for Dana 44 Power Lok, Aggressive, 16151 (Part No.16151)

Yukon Gear Replacement Clutch Set for Dana 44 Power Lok, Aggressive, 16151

from

$232.99
Yukon Gear & Axle manufactures a full line of top-quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers, and other general maintenance items. You can count on Yukon to fulfill all your differential small parts needs.
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Dorman – Dorman Premium Ring and Pinion Master Bearing and Installation Kit, 797-109 (Part No.797-109)

Dorman Premium Ring and Pinion Master Bearing and Installation Kit, 797-109

from

$297.99
If you’re repairing or rebuilding a front or rear differential and want the best performance and longevity from the bearings being replaced, choose this premium differential kit. It includes high-precision bearings manufactured to tighter tolerances and engineered to last longer than common lower-grade bearings that have more backlash when subjected to the torque generated within the differential. This convenient kit also saves the time needed to source individual components. Check the product attributes and fitment details to select the correct premium differential kit for your application.
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Powertrax – Powertrax Differential Lock Assembly, 2415-LR (Part No.2415-LR)

Powertrax Differential Lock Assembly, 2415-LR

from

$442.99
For vehicles that are driven daily, the Power Trax No-Slip Traction System is the latest design in quiet traction-adding differential technology. It combines the automatic street-friendly smooth operation of a limited-slip differential with the traction performance of a locking differential. The Power Trax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Power Trax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Power Trax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds.
See More

Yukon Gear – "Yukon Gear Chrome Cover for 8.5"" GM Front, 32016" (Part No.32016)

"Yukon Gear Chrome Cover for 8.5"" GM Front, 32016"

from

$44.99
These Yukon replacement diff covers take your rig a step beyond the boring factory look. They are the stock OE design finished in chrome.
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Most Popular Differential Oil for 1975 GMC K15s

Enhance your 1975 GMC K15 with one of the 3 Differential Oil we have in stock, starting at just $35.99.

Yukon Gear – Yukon Gear 3 Qt – Penzoil 80W90 Conventional Gear Oil, 15002 (Part No.15002)

Yukon Gear 3 Qt - Penzoil 80W90 Conventional Gear Oil, 15002

from

$44.99
Union 76 gear oil is a conventional non-synthetic 80W90 formulation designed for all types of differentials.
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Yukon Gear – "Yukon Gear Redline Synthetic ""Shock Proof"" Oil – 4 Quarts, 15004" (Part No.15004)

"Yukon Gear Redline Synthetic ""Shock Proof"" Oil - 4 Quarts, 15004"

from

$137.99
Redline Heavy Shockproof Gear Oil is formulated to provide lasting protection.
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Valvoline – Valvoline Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid 1 GA, 904891 (Part No.904891)

Valvoline Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid 1 GA, 904891

from

$35.99
Choosing an automatic transmission fluid just got easier. Valvoline Full Synthetic MaxLife Multi-Vehicle ATF, the #1 ATF product, is suitable for use in 95% of ATF vehicles in operation with US registered light duty applications. And now, it€™s also recommended for most belt and chain-driven continuously variable transmissions (CVT). Featuring advanced additives to prevent the major causes of transmission breakdown, it€™s designed to help prevent leaks, reduce wear and tear, and maximize performance €“ all for much longer than conventional fluids. It has improved thermal stability for longer fluid life, better viscosity stability for consistent transmission operation, and frictional enhancements for smooth gear engagements. Whether your vehicle has a CVT or traditional automatic, Valvoline MaxLife Multi-Vehicle ATF is suitable for a broad range of transmissions including Ford, GM, Toyota, Honda, Nissan, Hyundai, Subaru, BMW, Mercedes, Volvo, VW and Audi vehicles. It€™s specifically recommended for use in the following applications: GM DEXRON-II, DEXRON-III, DEXRON-VI, and DEX-CVT; Ford MERCON LV; Toyota/Lexus Type T, T-II, T-IV, WS, CVTF FE, and CVTF TC. For the many miles ahead, trust your transmission with Valvoline, the #1 automatic transmission fluid brand.
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Best-Selling 1975 GMC K15 Rear Differential Cover Gaskets

Upgrade your K15 with one of our 2 best-selling Rear Differential Cover Gaskets, earning an average 5 stars rating across 3 reviews.

Felpro – Felpro Axle Housing Cover Gasket Irregular Shaped 12 Bolt Hole Gasket, RDS 13391 (Part No.RDS 13391)

Felpro Axle Housing Cover Gasket Irregular Shaped 12 Bolt Hole Gasket, RDS 13391

from

$9.49
Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
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Pro-King – Pro-King Differential Cover Gasket, 742G303A (Part No.742G303A)

Pro-King Differential Cover Gasket, 742G303A

from

$32.49
Pro-King is the leading supplier of transmission and driveline products in the aftermarket.
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Top-Quality Differential Covers for 1975 GMC K15s

Choose a high-quality OEM or aftermarket Differential Cover for GMC K15s and enjoy top-notch performance from $64.99.

Mr. Gasket – Mr. Gasket Differential Cover Kit, 9895 (Part No.9895)

Mr. Gasket Differential Cover Kit, 9895

from

$88.69
The Mr. Gasket chrome plated rear end cover is made from heavy-gauge steel, and comes complete with bolts and gaskets.
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Yukon Gear – Yukon Gear Replacement Chrome Cover for Dana 44, 32004 (Part No.32004)

Yukon Gear Replacement Chrome Cover for Dana 44, 32004

from

$67.99
These Yukon replacement diff covers take your rig a step beyond the boring factory look. They are the stock OE design finished in chrome.
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Yukon Gear – Yukon Gear Chrome Cover for GM 12 Bolt Truck, 32012 (Part No.32012)

Yukon Gear Chrome Cover for GM 12 Bolt Truck, 32012

from

$64.99
These Yukon replacement diff covers take your rig a step beyond the boring factory look. They are the stock OE design finished in chrome.
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Yukon Gear – Yukon Gear Steel Cover for Dana 44 Standard Rotation, 32319 (Part No.32319)

Yukon Gear Steel Cover for Dana 44 Standard Rotation, 32319

from

$129.99
These Yukon replacement diff covers are a direct bolt-on.
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Yukon Gear – Yukon Gear Aluminum Girdle replacement Cover for Dana 44 TA HD, 32110 (Part No.32110)

Yukon Gear Aluminum Girdle replacement Cover for Dana 44 TA HD, 32110

from

$359.99
These Yukon replacement diff covers take your rig a step beyond the boring factory look. They are the stock OE design made from aluminum and polished to perfection.
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B & M – "B & M Cast Aluminum Differential Cover For Gm 8.875"" 12 Bolt Truck, 70504" (Part No.70504)

"B & M Cast Aluminum Differential Cover For Gm 8.875"" 12 Bolt Truck, 70504"

from

$334.99
Our engineers designed the line of Hi-Tek differential covers to not only look good but address a number of weaknesses of the factory stamped steel covers. First, they started by constructing the covers of thick A356.0-T6 aluminum, which dissipates heat much faster than the factory steel unit keeping the fluid temperature lower under high-stress loads vs. a steel cover. Then for added durability, we added a reinforced center bar for extra strength along with load bolts to help prevent bearing cap deflection under severe loads. The internal shape of the cover retains the smooth round back internally to help keep the fluid flow going over the ring gear to properly lubricate the gears and bearings. Additional features include a magnetic drain plug for catching ferrous metal particles, machined B&M logo and all necessary hardware and easy to follow detailed instructions for a quick and simple installation you can do at home. Note: Gasket not included.
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Yukon Gear – Yukon Gear Polished Aluminum Cover for GM 12 Bolt Truck, 32027 (Part No.32027)

Yukon Gear Polished Aluminum Cover for GM 12 Bolt Truck, 32027

from

$269.99
These Yukon replacement diff covers take your rig a step beyond the boring factory look. They are the stock OE design made from aluminum and polished to perfection.
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Top Picks for 1975 GMC K15 Rear Housing Cover Gaskets

Invest in one of our 2 durable Rear Housing Cover Gaskets for your 1975 GMC, knowing you’re getting trusted brands and expert craftsmanship.

Felpro – Felpro Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket, RDS 6629 (Part No.RDS 6629)

Felpro Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket, RDS 6629

from

$7.99
Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
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Victor Reinz – Victor Reinz Axle Housing Cover Gasket, 71-14826-00 (Part No.71-14826-00)

Victor Reinz Axle Housing Cover Gasket, 71-14826-00

from

$9.99
With Victor Reinz gaskets, you can be sure you are getting sealing solutions that deliver OE quality gasket technology and engineering. That is because Victor Reinz is an original equipment supplier and the trusted choice of manufacturers the world over, offering broad coverage for foreign and domestic cars and trucks. In Victor Reinz gasket sets, you get the right combination of components needed for fast, long-lasting repairs.
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Differential Bearings for 1975 GMC K15s

Make a smart move for your 1975 GMC K15 with products all priced from $7.99 to $28.99.

Driveworks – Driveworks Tapered Roller Bearing, S-LM-603012 (Part No.S-LM-603012)

Driveworks Tapered Roller Bearing, S-LM-603012

from

$7.99
Driveworks Tapered Roller Bearing, S-LM-603012.
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Yukon Gear – Yukon Gear Positraction Cross Pin Bolt for GM 12 Bolt Car and Truck, 33344 (Part No.33344)

Yukon Gear Positraction Cross Pin Bolt for GM 12 Bolt Car and Truck, 33344

from

$28.99
Yukon Gear & Axle manufactures a full line of top quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers and much, much more. For all your differential small parts needs, look no further than Yukon.
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National – National Bearing Race, 25523 (Part No.25523)

National Bearing Race, 25523

from

$20.29
Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.
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Driveworks – Driveworks Tapered Roller Bearing, S-LM-102911 (Part No.S-LM-102911)

Driveworks Tapered Roller Bearing, S-LM-102911

from

$13.49
Driveworks Tapered Roller Bearing, S-LM-102911.
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Yukon Gear – "Yukon Gear GM 55, 8.2"", 12P, and 12T Standard Open Cross Pin Bolt, 33068" (Part No.33068)

"Yukon Gear GM 55, 8.2"", 12P, and 12T Standard Open Cross Pin Bolt, 33068"

from

$7.99
Yukon Gear & Axle manufactures a full line of top quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers and much, much more. For all your differential small parts needs, look no further than Yukon.
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Top-Rated Differential Brands For Your 1975 GMC K15

When it comes to finding the perfect Differential for your 1975 GMC K15, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 16 trusted brands. We carry the most popular Differential brands including National, Driveworks, and Motive Gear, and more, all known for their exceptional customer ratings (average brand rating of 4.3 stars) and competitive prices, as low as $8.99. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1975 GMC K15, providing peace of mind with parts that meet or exceed OEM standards.

Popular National 1975 GMC K15 Differentials

If you’re looking for a top-quality Differential for your 1975 GMC K15, Advance Auto Parts has exactly what you need with our selection of National Differentials. We have 3 National Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $23.79 and an average cost of $26.76, you’ll find the perfect Differential for your needs and budget. National Differentials for the 1975 GMC K15 come highly rated, with over 6 customer reviews and an impressive average rating of 4.3 stars. Choosing a National Differential from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
National Tapered Roller Bearing Cone, HM89449
from $25.49
(1)
National Tapered Roller Bearing Cone, HM89449
“This Is The One That Fit My 1971 CHEVY TRUCK 12 BOLT PINION REAR BACK BEARING”
National Shaft Repair Sleeve, 99138
from $30.99
(1)
National Shaft Repair Sleeve, 99138
“Perfect Fit. Product was exactly as described”
National Differential Pinion Seal, 5778
from $23.79
(4)
National Differential Pinion Seal, 5778
“Works well fit right in. Love national seals”

Top-Quality Driveworks 1975 GMC K15 Differentials

For those in search of a high-quality Differential for their 1975 GMC K15, Advance Auto Parts offers a great selection of Driveworks Differentials. With 3 Driveworks Differentials in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Differentials start at just $8.99, with an average price of $11.26, giving you a range of options to suit your budget. Backed by over 5 customer ratings and an average rating of 4.2 stars, Driveworks Differentials provide both reliability and excellent performance. Choosing a Driveworks Differential from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
Driveworks Oil Seal, S-5778
from $13.99
(3)
Driveworks Oil Seal, S-5778
“Fit the rear Dana 44 on my TJ just fine and stopped the leaking.”
Driveworks Oil Seal, S-2043
from $10.79
(1)
Driveworks Oil Seal, S-2043
“Didn’t fit my 1992 K1500 10 bolt 8.5″ ring gear rear end. Was told wrong part.”
Driveworks Oil Seal, S-8460N
from $8.99
(1)
Driveworks Oil Seal, S-8460N
“Great fitment”

FAQs for 1975 GMC K15 Differentials

What are the best-selling Differentials for 1975 GMC K15s?

Out of 274 Differentials that fit 1975 GMC K15s, the following parts are the top sellers:

What’s the price range for 1975 GMC K15 Differentials?

The prices of Differentials for the 1975 GMC K15 range from $0.91 up to $1,302.99 for the most premium parts.

What is the average price of a Differential for a 1975 GMC K15?

The average price for Differentials for the 1975 GMC K15 is $196.06. Keep in mind the variety of part types within our Differential category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Differentials for other GMC K15 model years?

Yes, we carry Differentials for 2 model years of GMC K15s between 1976 and 1978. The following model years are the most popular for Differential purchases: 1978, 1977, and 1976.

What are the cheapest Differentials for my 1975 GMC K15?

The cheapest 1975 GMC K15 Differentials we carry are:

Does Advance Auto Parts sell Differentials for any other 1975 GMC models?

Yes. We stock Differentials for 11 other popular 1975 GMC models. Some of the most popular are 1975 Jimmy Differentials, 1975 K25 Differentials, 1975 G25 Differentials, 1975 C25 Differentials, and 1975 C15 Differentials.

What types of Differentials do you sell for my 1975 GMC K15?

As of 8/2/26, these are some of the most in-demand types of Differentials for a 1975 GMC K15:

Can I get help with 1975 GMC K15 Differential orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about GMC Differentials and more.

What is your return policy for GMC K15 Differentials?

Advance Auto Parts keeps returns simple. For new GMC K15 Differentials and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.