1975 GMC K25 Differentials

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Keep Your 1975 GMC K25 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 K25 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Rear Differential Cover Gaskets, Differential Oil, 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 National, Driveworks, and Felpro. For example, National Differentials start at just $13.99 with an average 4.3 star rating. Driveworks and Felpro offer similar pricing and quality, backed by strong customer feedback. With over 150 reviews and a solid 4.6 star average, you can shop with confidence knowing other GMC K25 owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1975 GMC K25 Differential at Advance Auto Parts is around $217.03, with a range that starts at $0.91 and goes up to $1,302.99. With 235 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, Yukon Gear Differential Cover B, 33572, and Felpro Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket, RDS 6629 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 K25 in peak condition, inside and out.

Essential 1975 GMC K25 Differentials

Yukon Gear – "Yukon Gear Minor Install Kit for ’87 & Down 10.5"" GM 14 Bolt Truck Differential, 12045" (Part No.12045)

"Yukon Gear Minor Install Kit for '87 & Down 10.5"" GM 14 Bolt Truck Differential, 12045"

from

$108.99
Yukon Minimum Installation Kits are a low-cost solution for ring and pinion gear changes in newer vehicles where the bearings can be reused. Kits include all high-quality components for a smooth differential set up.
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Motive Gear – Motive Gear Differential Internal Carrier Gear Kit, GM9.5BI (Part No.GM9.5BI)

Motive Gear Differential Internal Carrier Gear Kit, GM9.5BI

from

$133.99
Motive Gear Differential Internal Carrier Gear Kit, GM9.5BI.
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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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Motive Gear – Motive Gear Differential Gear Install Kit, D44IK (Part No.D44IK)

Motive Gear Differential Gear Install Kit, D44IK

from

$61.99
Motive Gear Differential Gear Install Kit, D44IK.
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Motive Gear – Motive Gear Differential Ring and Pinion, D44-456 (Part No.D44-456)

Motive Gear Differential Ring and Pinion, D44-456

from

$185.99
Motive Gear Differential Ring and Pinion, D44-456.
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Yukon Gear – "Yukon Gear 8.5"" & 8.2"" GM carrier installation kit, 57008" (Part No.57008)

"Yukon Gear 8.5"" & 8.2"" GM carrier installation kit, 57008"

from

$109.99
Yukon Carrier Installation Kits are a convenient and low-cost solution for carrier changes in cases where one is upgrading to a positraction limited slip differential, a mechanical locker, or an air operated locker. These kits contain carrier bearings and races and a carrier shim kit.
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Yukon Gear – "Yukon Gear 8.5"" GM Extra HD Standard Open Case (Uses Larger Bearings), 20084" (Part No.20084)

"Yukon Gear 8.5"" GM Extra HD Standard Open Case (Uses Larger Bearings), 20084"

from

$232.99
“8.5”” GM EXTRA HD standard Open case (uses larger bearings).”
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Yukon Gear – "Yukon Gear 14 Plate Dura Grip Comp Clutches GM 8.2""/GM 8.5""/12T/12P/Ford 8.8""/CastIronVette, 16064" (Part No.16064)

"Yukon Gear 14 Plate Dura Grip Comp Clutches GM 8.2""/GM 8.5""/12T/12P/Ford 8.8""/CastIronVette, 16064"

from

$373.99
This Yukon Gear & Axle clutch kit is a direct replacement for the popular Yukon Dura Grip positraction unit.
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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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Yukon Gear – "Yukon Gear Forged Yoke for GM 8.5"" with A 1350 U/Joint Size., 41093" (Part No.41093)

"Yukon Gear Forged Yoke for GM 8.5"" with A 1350 U/Joint Size., 41093"

from

$359.99
Yukon Gear and Axle manufactures a complete line of general replacement and performance series of pinion yokes for many street, racing, and heavy-duty off-road applications.
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Motive Gear – Motive Gear Differential Carrier Shim Kit, 1101 (Part No.1101)

Motive Gear Differential Carrier Shim Kit, 1101

from

$8.99
High-quality Differential Carrier Shim Kit
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National – National Taper Bearing Cup, 31520 (Part No.31520)

National Taper Bearing Cup, 31520

from

$13.79
Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.
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Yukon Gear – "Yukon Gear Dana 44, Ford 8"" / 9"", and Model 20 Side Gear Thrust Washer Replacement, 33283" (Part No.33283)

"Yukon Gear Dana 44, Ford 8"" / 9"", and Model 20 Side Gear Thrust Washer Replacement, 33283"

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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Yukon Gear – "Yukon Gear Standard Open Cross Pin (0.795"" Diameter) for 8.5"" GM – Some Eaton Positractions, 33401" (Part No.33401)

"Yukon Gear Standard Open Cross Pin (0.795"" Diameter) for 8.5"" GM - Some Eaton Positractions, 33401"

from

$49.99
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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Pro-King – Pro-King Differential Cover Plug, 742G484 (Part No.742G484)

Pro-King Differential Cover Plug, 742G484

from

$6.99
Pro-King is the leading supplier of transmission and driveline products in the aftermarket.
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Driveworks – Driveworks Tapered Roller Bearing, S-2820 (Part No.S-2820)

Driveworks Tapered Roller Bearing, S-2820

from

$18.49
Driveworks Tapered Roller Bearing, S-2820.
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Richmond Gear – Richmond Gear Differential Pinion Shaft, 80-0272-1 (Part No.80-0272-1)

Richmond Gear Differential Pinion Shaft, 80-0272-1

from

$66.99
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 Bearing Race Driver for Ford 9"", GM 10.5"", & Chrysler 11.5"" Differentials, 56019" (Part No.56019)

"Yukon Gear Bearing Race Driver for Ford 9"", GM 10.5"", & Chrysler 11.5"" Differentials, 56019"

from

$219.99
Yukon Gear & Axle offers a full line of top quality differential tools to save time and money.
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Pro-King – Pro-King Differential Ring Gear Bolt, 742J935 (Part No.742J935)

Pro-King Differential Ring Gear Bolt, 742J935

from

$0.91
Pro-King is the leading supplier of transmission and driveline products in the aftermarket.
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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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Yukon Gear – "Yukon Gear Pinion Install Kit for GM 8.5"" Front Differential, 13070" (Part No.13070)

"Yukon Gear Pinion Install Kit for GM 8.5"" Front Differential, 13070"

from

$173.99
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 Replacement Front Axle Inner Seal Redi-Sleeve For Dana 44 & 8.5"" GM, 30219" (Part No.30219)

"Yukon Gear Replacement Front Axle Inner Seal Redi-Sleeve For Dana 44 & 8.5"" GM, 30219"

from

$83.99
“Replacement front axle inner seal redi-sleeve for Dana 44 & 8.5″” GM.Yukon Mighty seal.”
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Yukon Gear – Yukon Gear Replacement Clutch Set for Dana 44 Power Lok, Smooth, 16152 (Part No.16152)

Yukon Gear Replacement Clutch Set for Dana 44 Power Lok, Smooth, 16152

from

$177.99
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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Yukon Gear – Yukon Gear Pump Up Kit, Zip Locker, 34031 (Part No.34031)

Yukon Gear Pump Up Kit, Zip Locker, 34031

from

$174.99
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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Yukon Gear – "Yukon Gear 14T GM Pinion Support Bolt, 7/16-14"" Long, 33582" (Part No.33582)

"Yukon Gear 14T GM Pinion Support Bolt, 7/16-14"" Long, 33582"

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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Yukon Gear – Yukon Gear Dura Grip For Dana 44, 30 Spline, 3.73 & Down, 26026 (Part No.26026)

Yukon Gear Dura Grip For Dana 44, 30 Spline, 3.73 & Down, 26026

from

$869.99
The Yukon Dura Grip provides aggressive yet smooth traction to give you the confidence & performance you need. Get longer life and better traction with the heavy duty Yukon Dura Grip Positraction. The Yukon Dura Grip uses a nodular case and forged 4320 internals for added strength along with composite clutches for high performance and long life. All units are Rebuildable and many offer upgrades to increase aggressiveness for racing applications. Each unit carries a one year warranty against defects.
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National – National Bearing Race, 382A (Part No.382A)

National Bearing Race, 382A

from

$13.99
Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.
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Yukon Gear – Yukon Gear 14T Pinion Gear Thrust Washer, 33384 (Part No.33384)

Yukon Gear 14T Pinion Gear Thrust Washer, 33384

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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Popular 1975 GMC K25 Differentials Categories

Most Popular Rear Differential Cover Gaskets for 1975 GMC K25s

Enhance your 1975 GMC K25 with one of the 3 Rear Differential Cover Gaskets we have in stock, starting at just $13.99.

Mr. Gasket – Mr. Gasket Differential Cover Gasket, 84B (Part No.84B)

Mr. Gasket Differential Cover Gasket, 84B

from

$22.19
Mr. Gasket Axle Housing/Differential Cover or Rear End Gaskets are manufactured from a .047 inch thick cellulose/nitrile composite gasket material for excellent sealing and durability. They are precision die-cut for an excellent fit. Fits 1964-1970 Chevrolet 8.2 inch 10 bolt & 1970-1981 GM 8.5 inch ring gear.
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Yukon Gear – Yukon Gear GM 10.5′ 14 Bolt Truck Cover Gasket, 23016 (Part No.23016)

Yukon Gear GM 10.5' 14 Bolt Truck Cover Gasket, 23016

from

$13.99
14T cover gasket. EXTERNAL SUPPLY>FDO>BACK ROOM-FDO>APPLICATION SPECIFIC from Yukon Gear
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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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Best-Selling 1975 GMC K25 Differential Oil

Upgrade your K25 with one of our 3 best-selling Differential Oil.

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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Top-Quality Differential Covers for 1975 GMC K25s

Choose a high-quality OEM or aftermarket Differential Cover for GMC K25s and enjoy top-notch performance from $59.99.

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 Steel Cover for GM 10.5"" 14 Bolt Truck, 32345" (Part No.32345)

"Yukon Gear Steel Cover for GM 10.5"" 14 Bolt Truck, 32345"

from

$92.99
These Yukon replacement diff covers are a direct bolt-on.
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Yukon Gear – "Yukon Gear Chrome Cover for 10.5"" GM 14 Bolt Truck, 32013" (Part No.32013)

"Yukon Gear Chrome Cover for 10.5"" GM 14 Bolt Truck, 32013"

from

$59.99
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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B & M – "B & M Cast Aluminum Differential Cover For Gm 10.5"" 14 Bolt, 70501" (Part No.70501)

"B & M Cast Aluminum Differential Cover For Gm 10.5"" 14 Bolt, 70501"

from

$385.99
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: Does Not Include Gasket
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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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Our Top Pick for a 1975 GMC K25 Rear Housing Cover Gasket

Invest in a durable Rear Housing Cover Gasket 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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Top-Rated Differential Bearings for 1975 GMC K25s

Make a smart move for your 1975 GMC K25 with products all priced from $7.99 to $21.99.

National – National Bearing Race, 382A (Part No.382A)

National Bearing Race, 382A

from

$13.99
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-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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Driveworks – Driveworks Tapered Roller Bearing, S-HM-803110 (Part No.S-HM-803110)

Driveworks Tapered Roller Bearing, S-HM-803110

from

$13.49
Driveworks Tapered Roller Bearing, S-HM-803110.
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Schaeffler – Schaeffler Bearing – TRB (Tapered Roller Bearing), KT45 (Part No.KT45)

Schaeffler Bearing - TRB (Tapered Roller Bearing), KT45

from

$21.99
With advanced load-carrying capacity and compact design, tapered roller bearings are used in wheel bearings, transmissions, differentials, transfer cases and other miscellanous applications. FAG manufacturers over 100 million tapered roller bearings annually.
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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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Top-Rated Differential Brands For Your 1975 GMC K25

When it comes to finding the perfect Differential for your 1975 GMC K25, 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 Felpro, National, and Driveworks, and more, all known for their exceptional customer ratings (average brand rating of 4.6 stars) and competitive prices, as low as $7.99. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1975 GMC K25, providing peace of mind with parts that meet or exceed OEM standards.

Popular Felpro 1975 GMC K25 Differentials

If you’re looking for a top-quality Differential for your 1975 GMC K25, Advance Auto Parts has exactly what you need with our selection of Felpro Differentials. We have 1 Felpro Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $7.99, you’ll find the perfect Differential for your needs and budget. Felpro Differentials for the 1975 GMC K25 come highly rated, with over 10 customer reviews and an impressive average rating of 4.6 stars. Choosing a Felpro Differential from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.

Top-Quality National 1975 GMC K25 Differentials

For those in search of a high-quality Differential for their 1975 GMC K25, Advance Auto Parts offers a great selection of National Differentials. With 3 National 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 $13.99, with an average price of $22.92, giving you a range of options to suit your budget. Backed by over 11 customer ratings and an average rating of 4.3 stars, National Differentials provide both reliability and excellent performance. Choosing a National Differential from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
National Bearing Race, 382A
from $13.99
(6)
National Bearing Race, 382A
“Fit perfectly. No difficulty replacing my old ones.”
National Differential Pinion Seal, 5778
from $23.79
(4)
National Differential Pinion Seal, 5778
“Works well fit right in. Love national seals”
National Shaft Repair Sleeve, 99138
from $30.99
(1)
National Shaft Repair Sleeve, 99138
“Perfect Fit. Product was exactly as described”

FAQs for 1975 GMC K25 Differentials

What are the best-selling Differentials for 1975 GMC K25s?

Out of 235 Differentials that fit 1975 GMC K25s, the following parts are the top sellers:

What’s the price range for 1975 GMC K25 Differentials?

The prices of Differentials for the 1975 GMC K25 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 K25?

The average price for Differentials for the 1975 GMC K25 is $217.03. 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 K25 model years?

Yes, we carry Differentials for 2 model years of GMC K25s 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 K25?

The cheapest 1975 GMC K25 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 K15 Differentials, 1975 G25 Differentials, 1975 C25 Differentials, and 1975 C15 Differentials.

What types of Differentials do you sell for my 1975 GMC K25?

As of 8/2/26, these are some of the most in-demand types of Differentials for a 1975 GMC K25:

Can I get help with 1975 GMC K25 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 K25 Differentials?

Advance Auto Parts keeps returns simple. For new GMC K25 Differentials and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.