1978 GMC G15 Gear Boxes

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Keep Your 1978 GMC G15 in Top Shape with Quality Gear Boxes

Whether you’re repairing or upgrading your Gear Box, using high-quality parts is key to keeping your 1978 GMC G15 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Steering Stabilizers. 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.

Competitive Prices and Extensive Inventory

The average price for a 1978 GMC G15 Gear Box at Advance Auto Parts is around $120.49, with a range that starts at $60.99 and goes up to $179.99. With 2 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like Steering Damper start at just $179.99 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Gear Box, don’t forget to check out other key components like Ball Joints and Idler Arms. At Advance Auto Parts, we’re here to help you keep your 1978 GMC G15 in peak condition, inside and out.

Essential 1978 GMC G15 Gear Boxes

Rare Parts – Steering Damper (Part No.RP50109)

Steering Damper

from

$179.99
This high quality chassis part will improve overall vehicle handling, reduce tire wear and increase the life of other steering and suspension components. These chassis parts are manufactured to meet or exceed OEM.

Product Features:
  • Helps eliminate uncontrolled steering or wobble
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Monroe – Magnum Steering Damper (Part No.SC2915)

Magnum Steering Damper

from

$60.99
Designed for trucks, vans, and SUVs, and CUVs, the Monroe Magnum steering stabilizer helps reduce vibrations that travel through the steering system before they get to the driver, improving control and driver fatigue in all driving conditions.

Product Features:
  • REDUCES VIBRATION – Ideal for trucks, vans, SUVs, and CUVs, it helps reduce vibrations that travel through the steering system before they get to the driver to improve control and cut down on driver fatigue in all driving conditions
  • CONSISTENT PERFORMANCE – All-weather fluid contains special additives to assist with extreme temperatures and help reduce oil breakdown
  • STRONG AND DURABLE – Sintered iron piston and .50-in. nitrocarburized piston rod for enhanced durability and long service life
  • EXCEPTIONAL HANDLING – Full displaced valving delivers better valving range on both compression and extension cycles for consistent performance
  • LONGER SERVICE LIFE – Self-lubricating fluid seal retains gas without excessive wear or friction
  • MOUNTS HORIZONATALLY – Micro-cellular gas design allows the unit to be mounted horizontally without impacting performance for improved steering control
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Most Popular Steering Stabilizers for 1978 GMC G15s

Enhance your 1978 GMC G15 with one of the 2 Steering Stabilizers we have in stock, starting at just $60.99.

Monroe – Magnum Steering Damper (Part No.SC2915)

Magnum Steering Damper

from

$60.99
Designed for trucks, vans, and SUVs, and CUVs, the Monroe Magnum steering stabilizer helps reduce vibrations that travel through the steering system before they get to the driver, improving control and driver fatigue in all driving conditions.

Product Features:
  • REDUCES VIBRATION – Ideal for trucks, vans, SUVs, and CUVs, it helps reduce vibrations that travel through the steering system before they get to the driver to improve control and cut down on driver fatigue in all driving conditions
  • CONSISTENT PERFORMANCE – All-weather fluid contains special additives to assist with extreme temperatures and help reduce oil breakdown
  • STRONG AND DURABLE – Sintered iron piston and .50-in. nitrocarburized piston rod for enhanced durability and long service life
  • EXCEPTIONAL HANDLING – Full displaced valving delivers better valving range on both compression and extension cycles for consistent performance
  • LONGER SERVICE LIFE – Self-lubricating fluid seal retains gas without excessive wear or friction
  • MOUNTS HORIZONATALLY – Micro-cellular gas design allows the unit to be mounted horizontally without impacting performance for improved steering control
See More

Rare Parts – Steering Damper (Part No.RP50109)

Steering Damper

from

$179.99
This high quality chassis part will improve overall vehicle handling, reduce tire wear and increase the life of other steering and suspension components. These chassis parts are manufactured to meet or exceed OEM.

Product Features:
  • Helps eliminate uncontrolled steering or wobble
See More

FAQs for 1978 GMC G15 Gear Boxes

What are the best-selling Gear Boxes for 1978 GMC G15s?

Out of 2 Gear Boxes that fit 1978 GMC G15s, the following parts are the top sellers:

What’s the price range for 1978 GMC G15 Gear Boxes?

The prices of Gear Boxes for the 1978 GMC G15 range from $60.99 up to $179.99 for the most premium parts.

What is the average price of a Gear Box for a 1978 GMC G15?

The average price for Gear Boxes for the 1978 GMC G15 is $120.49. Keep in mind the variety of part types within our Gear Box category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Gear Boxes for other GMC G15 model years?

Yes, we carry Gear Boxes for 2 model years of GMC G15s between 1975 and 1977. The following model years are the most popular for Gear Box purchases: 1977, 1976, and 1975.

What are the cheapest Gear Boxes for my 1978 GMC G15?

The cheapest 1978 GMC G15 Gear Boxes we carry are:

Does Advance Auto Parts sell Gear Boxes for any other 1978 GMC models?

Yes. We stock Gear Boxes for 12 other popular 1978 GMC models. Some of the most popular are 1978 Jimmy Gear Boxes, 1978 Caballero Gear Boxes, 1978 K25 Gear Boxes, 1978 K15 Gear Boxes, and 1978 G25 Gear Boxes.

What are the top-rated Gear Boxes that fit the 1978 GMC G15?

The one 1978 GMC G15 Gear Box we have in stock is the Magnum Steering Damper. It is rated 2 stars and costs $60.99.

What types of Gear Boxes do you sell for my 1978 GMC G15?

We currently have just 1 Gear Box in stock for a 1978 GMC G15, and as of 3/1/26, it is a Steering Stabilizer.

Can I get help with 1978 GMC G15 Gear Box orders?

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

What is your return policy for GMC G15 Gear Boxes?

Advance Auto Parts keeps returns simple. For new GMC G15 Gear Boxes and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.