1978 GMC K15 Suspension Parts

Essential 1978 GMC K15 Suspension Parts

Energy Suspension – Hyper-Flex System (Part No.3.18105R)

Hyper-Flex System

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$366.99
Product Features:
  • Incredible Improvement in Control
  • Maintains Proper Caster and Camber Alignment
  • Increase in Handling and Control
  • Greatly Reduce Wheel Hop on Quick Acceleration
  • Even Braking Control is Improved
  • Better Suspension Stability
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Energy Suspension – Hyper-Flex System (Part No.3.18104G)

Hyper-Flex System

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$359.99
Product Features:
  • Incredible Improvement in Control
  • Maintains Proper Caster and Camber Alignment
  • Increase in Handling and Control
  • Greatly Reduce Wheel Hop on Quick Acceleration
  • Even Braking Control is Improved
  • Better Suspension Stability
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Energy Suspension – Leaf Spring Bushing Set (Part No.3.2105G)

Leaf Spring Bushing Set

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$67.99
Adds a dramatic amount of performance and durability to any vehicle, cars, trucks and SUVs. Helps the vehicle be in control – when maneuvering through turns, during standing start accelerations, braking, even over bumps and berms. Made of Energy’s Hyper-Flex performance polyurethane which lasts 5 -10 times longer than conventional rubber components.

Product Features:
  • Made of Superior Hyper-Flex+ Material
  • Adds Dramatic Amount of Performance/Durability
  • Helps Vehicle Be in Control
  • Allows the Suspension to Function Properly
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Rare Parts – Shackle Bushing (Part No.RP35227)

Shackle Bushing

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$20.99
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:
  • Rubber or Heat Treated bushings
  • No Squeak
  • Reduces vibration
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Valvoline – DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart (Part No.798153)

DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart

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$11.99
Valvoline DEX/MERC ATF is a high-quality transmission fluid formulated to meet the challenging demands many automatic transmissions. Its responsive low-temperature fluidity is beneficial in both electronic and hydraulic controlled transmissions and transaxles. Recommended for use in the following applications: MERCON®, DEXRON®-III, Ford M2C138-CJ and M2C166-H, Allison C-4 and TES-389, and Caterpillar TO-2.

Product Features:
  • Formulated with premium base stocks and advanced additive technology to meet the challenging demands of automatic transmissions.
  • Enhanced anti-shudder protection for smooth shifting and maximum power transfer
  • Developed with anti-wear technology to help improve transmission durability
  • Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures
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Valvoline – DEXRON®-VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart (Part No.822405)

DEXRON®-VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart

from

$14.49
Valvoline DEXRON®-VI ATF is a full-synthetic transmission fluid formulated with advanced additive technology to meet and exceed the requirements of the General Motors’ DEXRON®-VI specification. It is officially licensed and approved by GM and is fully back-serviceable and can be used wherever DEXRON®-II and/or DEXRON®-III are recommended. Recommended for use in the following applications: DEXRON®-VI, DEXRON®-III, DEXRON®-II, and Allison C-4.

Product Features:
  • Formulated with full-synthetic base stocks and advanced additive technology to meet the challenging demands of automatic transmissions.
  • Enhanced anti-shudder protection for smooth shifting and maximum power transfer
  • Developed with anti-wear technology to help improve transmission durability
  • Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures
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Monroe – Max-Air Air Shock Absorber (Part No.MA743)

Max-Air Air Shock Absorber

from

$159.99
Ideal for hauling, Monroe® Max-Air® shock absorbers can be inflated or deflated up to 150 PSI to maintain level height with additional weight up to 1,200 lbs. (capacity is limited by vehicle suspension, tires and transmission. See vehicle owner’s manual.)

Product Features:
  • MAINTAIN RIDE HEIGHT UNDER LOAD — Air chamber can be inflated or deflated up to 150 PSI to maintain level height with additional weight up to 1,200 lbs. (capacity is limited by suspension, tires and transmission, see owner’s manual)
  • EASY TO ADJUST — Special air fitting resists air leakage and ties into factory system (where applicable) or manually inflates with an air compressor, pair with Monroe air shock accessory and shock air hose AK kits (varies by application)
  • EXCEPTIONAL HANDLING — Full-displaced valving on compression and extension cycles for a smooth ride
  • BUILT TO LAST — Hardened and precision ground piston rod for consistent performance, sintered iron piston for enhanced durability and longer service life and lubricated air sleeve reduces friction for smooth operation
  • CONSISTENT RIDE — OE all-weather fluid contains special modifiers to handle extreme temperatures and help reduce friction and ensure smooth rod reaction
  • Sintered Iron Piston: Stronger than traditional metals, enhances durability for longer service life.
  • Special Air Fitting: Resists air leakage.
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Skyjacker – Black Max Shock Absorber (Part No.B8551)

Black Max Shock Absorber

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$69.99
The performance specific internal components of Skyjacker shocks respond to the on- and off-road conditions instantly. Whether you are going over rough or smooth terrain at slow or fast speeds, the true velocity sensitive valving produces a stable, controlled level of resistance for better handling, improved stability, and maximum comfort. The technological innovations of these durable, long lasting shocks from Skyjacker(R) deliver a noticeable advantage over the original equipment and other shock dampeners. Skyjacker shock absorbers deliver a safe, comfortable ride with improved handling and stability. They keep the tires in contact with the terrain and put you in control of the road ahead.

Product Features:
  • Twin Tube Construction
  • Advanced Foam-Cell Technology
  • Vehicle Specific Multi-Stage Valving
  • Increased Fluid Capacity For MAX Heat Dissipation
  • 360 Degree Arc-Welded End Mount And 180 Degree Directional Mounting
  • Chrome Plated Shaft And Sintered Iron Piston
  • Comes With Black Boot
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Monroe – Gas-Matic Truck Shock Absorber (Part No.59042)

Gas-Matic Truck Shock Absorber

from

$42.49
Monroe® Gas-Matic truck shock absorber are gas charged and provide improved control at an economical price.

Product Features:
  • Available for import and domestic light trucks and vans
  • Gas-charged unit
  • Improved handling and control
  • Economical OE replacement
  • Meets OE product specifications
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Monroe – Shock-Mate Shock Absorber Boot Kit (Part No.SA1998)

Shock-Mate Shock Absorber Boot Kit

from

$13.29
Monroe® Shock-Mate® Shock Absorber Boot Kits are universal replacement shock boots use to protect the shock’s piston rod from dirt, mud and other contaminants – protecting the life of your shocks.

Product Features:
  • Protects the shock’s piston rod from damage
  • Universal design for easy installation
  • Tie-strap included for a secure fit
  • Constructed from high quality urethane for maximum durability
  • Multiple color choices available
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Firestone Ride-Rite – Portable, Maximum 130 Psi, 18 Amps, With Compressor Only (Part No.9284)

Portable, Maximum 130 Psi, 18 Amps, With Compressor Only

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$251.99
The Air Command Standard Duty Dual Electric Air Compressor System Kit Allows You To Adjust Your Air Springs With The Touch Of A Button. It Offers A Built in Air Source For Your Suspension System, Making It Easy To Alter Your Springs To Align With The Load Type And Environment. When Shopping For Air Accessories, You will Find That Firestone Air Command Standard Duty Dual Electric Air Compressor System Kit Is Designed To Have A Couple Of Special Benefits. First, The Air Command Standard Duty Dual Electric Air Compressor System Kit Comes Ready To Install, So You Can Set It Up And Get Back To The Road where You Want To Be. Just Connect A Few Wires To The Compressor And A Few To Your Vehicle. The Air Lines And Wiring Harness Can Be Plugged Into The Same Side Of The Unit For Smoother Routing Of Lines And Power Supply. After The Air Command Standard Duty Dual Electric Air Compressor System Kit Is Properly Installed, You Can Make Pressure Adjustments By Pressing A Single Button. This Air Command Standard Duty Dual Electric Air Compressor System Kit Component Allows For Side To Side Or Front to rear Leveling, Real time Pressure Readout, And Dual Left And Right PSI And Pressure Control Readouts. The Air Command Standard Duty Dual Electric Air Compressor System Kit Easy to read Needle Gauge Can Be Viewed Day Or Night, Without Straining Or Squinting Your Eyes. Prior To Installing The Air Command Standard Duty Dual Electric Air Compressor System Kit, Review The Instructions And Identify All Of The Components To Help Make Sure You Get Maximum Performance From Both Your Air Springs And Air Command Standard Duty Dual Electric Air Compressor System Kit. The Installation Steps Are Different Depending On Whether You are Enhancing An Existing Air Helper Spring System With The Air Command Standard Duty Dual Electric Air Compressor System Kit Or Installing It With A New Air Spring System.

Product Features:
  • Individual Air Accessory Components Are Also Available, Including Compressors, Air Tanks, And Mounting Solutions, Providing A Wide Variety Of Air Control Assist Solutions
  • Adjust The Ride For Various Load And Road Conditions With A Switch, Remote Or Mobile App
  • Provides An Instant Air Source For The Air Helper Springs Or Accessories
  • Dual Point Fill (Both Air Springs Fill Independently Of Each Other)
  • Light Duty Compressor Specs (120 PSI Max Air Pressure, 9 Percent Duty Cycle, 0.32 CFM)
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Belltech – 1/2 Inch Lift, Rubber Bushing, Set Of 2 (Part No.6404)

1/2 Inch Lift, Rubber Bushing, Set Of 2

from

$104.99
By Engineering bracketry or replacement components Belltech Shackles and Hangers to reposition the front and/or rear Leaf Spring mounting points Spring eyes you can simply and effectively lower your Leaf Spring equipped sport truck or SUV without changing the factory Leaf Spring. This allows you to retain OEM Ride Quality and possibly more importantly factory load capacity. At Belltech, we offer both Belltech Shackles and Hangers as individual components as well as complete kits depending on your Lowering requirements. Belltech Shackle kits are designed drop the rear of your sport truck or SUV up to 2 Inches. For some applications we also offer a 1/2 Inch lifting Shackle kits. Belltech Shackle kits are constructed from Heavy Gauge die stamped P and O Steel to insure a perfect fit and superior quality. All Shackles are powder coated and feature OEM quality silent bloc rubber bushings and that do not need maintenance unlike polyurethane

Product Features:
  • To Reposition The Front And/Or Rear Leaf Spring Mounting Points Spring Eyes You Can Simply And Effectively Lower Your Leaf Spring Equipped Sport Truck Or SUV Without Changing The Factory Leaf Spring
  • This Allows You To Retain OEM Ride Quality And Possibly More Importantly Factory Load Capacity
  • Belltech Shackle Kits Are Designed Drop The Rear Of Your Sport Truck Or SUV Up To 2 Inches
  • For Some Applications We Also Offer A 1/2 Inch Lifting Shackle Kits
  • Belltech Shackle Kits Are Constructed From Heavy Gauge Die Stamped P And O Steel To Insure A Perfect Fit And Superior Quality
  • All Shackles Are Powder Coated And Feature OEM Quality Silent Bloc Rubber Bushings And That Do Not Need Maintenance Unlike Polyurethane
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Dorman – Rear Position Leaf Spring Shackle Kit (Part No.722-066)

Rear Position Leaf Spring Shackle Kit

from

$53.99
Get ahead of fatigued or rusted leaf spring shackles before they become dangerous. Made of sturdy steel with a power coated finish to resist corrosion, this leaf spring shackle is a direct replacement for your vehicle’s stock shackle.

Product Features:
  • Direct replacement – This leaf spring shackle fits and performs like original equipment shackle
  • Quality construction – manufactured from durable steel and powder coated for corrosion resistance and a long service life
  • Excellent value – original equipment quality at a lower price
  • Ready to install – all essential hardware is included for an easy installation
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Monroe – Load Adjusting Shock Absorber (Part No.58578)

Load Adjusting Shock Absorber

from

$173.99
Ideal for light trucks that that tow or carry varying loads, Monroe load adjusting shocks include a heavy gauge calibrated spring that adjusts to road and weight conditions to provide extra control when operating conditions get more demanding.

Product Features:
  • REDUCES SAG UNDER LOAD — Ideal for occasionally hauling or towing varying loads, heavy gauge, calibrated coil spring reduces sag when loaded up to 1,200 lbs. (capacity limited by suspension, tires and transmission, see owner’s manual)
  • EXCEPTIONAL HANDLING — Tuned specifically for each application, full-displaced valving automatically adjusts to road extremes to provide ride consistency
  • CONSISTENT RIDE — OE all-weather fluid contains special modifiers to handle extreme temperatures and PTFE-banded piston helps reduce friction between the piston and pressure tube to enhance responsiveness to changing road surfaces
  • LONGER SERVICE LIFE — Self-lubricating fluid seal retains gas and reduces excessive friction against the piston rod to help reduce premature wear while heavy-duty nitrocarburized rod delivers long life
  • IMPROVES PERFORMANCE — Nitrogen gas-charge maintains tire-to-road contact for improved ride and handling by reducing aeration and shock fade
  • Nitrogen Gas Charged: For Improved Ride & Handling, Helps Maintain Tire To Road Contact By Reducing Aeration – On Most Applications
  • 5/8 nitrocarburized rod for long service life.
  • Special Seal: ‘Self-lubricating’ fluid seal designed to retain gas without excessive wear or friction.
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Skyjacker – Nitrogen Gas Charged, Limited Lifetime Warranty, Non-Adjustable, Single (Part No.N8058)

Nitrogen Gas Charged, Limited Lifetime Warranty, Non-Adjustable, Single

from

$69.99
NITRO N8000 series shocks are recommended for full size vehicles and moderate to extreme off-road applications. Skyjacker(R) nitro shocks, Skyjacker(R) suspensions offers you a high quality shock absorber with true velocity sensitive valving. Shock absorbers, or spring dampers as it is called everywhere else except in the U.S, control the rate at which suspension springs compress and rebound. As the shock is pushed together, this is called bump or compression. As the shock expands, this is called rebound or extension. Absorbing the shock of bumps and suspension loading is actually performed by the springs in the suspension. The shock real job is controlling the energy stored in the springs. The performance specific internal components of Skyjacker shocks respond to the on- and off-road conditions instantly. Whether you are going over rough or smooth terrain at slow or fast speeds, the true velocity sensitive valving produces a stable, controlled level of resistance for better handling, improved stability, and maximum comfort. The technological innovations of these durable, long lasting shocks from Skyjacker(R) deliver a noticeable advantage over the original equipment and other shock dampeners. Skyjacker shock absorbers deliver a safe, comfortable ride with improved handling and stability. They keep the tires in contact with the terrain and put you in control of the road ahead

Product Features:
  • 150 PSI Pressurized Nitrogen Gas
  • Multi Stage Velocity Sensitive Valving
  • Twin Tube Construction. DOM Tubing Reduces Internal Wear For Longer Product Life
  • Bonded Iron Piston For Durability And Longer Shock Life
  • Chromed Piston Rod Features Micro Polished Shaft For Improved Product Life And Performance
  • Orifice Disk For Axle Control In Any Condition
  • Red Polyurethane Bushings
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Monroe – Gas-Magnum Shock Absorber (Part No.34824)

Gas-Magnum Shock Absorber

from

$77.99
Designed for midsize and full-size trucks and vans, Monroe® Gas-Magnum® shock absorbers provide firm control without a harsh ride. With up to twice the fluid capacity of standard 1-in. bore shocks, they work more efficiently with less effort.

Product Features:
  • DESIGNED FOR TRUCKS AND VANS — Engineered for hardworking full-size trucks and vans and features full-displaced valving on compression cycles to deliver controlled ride and handling
  • BUILT TO LAST — Heavy-duty nitrocarburized rod (non-dust shield units only) and sintered iron piston enhance durability for longer service life while self-lubricating fluid seal reduces friction against piston rod to reduce wear
  • CONSISTENT RIDE — OE all-weather fluid contains special modifiers to handle extreme temperatures and help reduce friction and ensure smooth rod reaction
  • IMPROVES PERFORMANCE — Nitrogen gas-charge maintains tire-to-road contact for improved ride and handling by reducing aeration and shock fade
  • LONGER SERVICE LIFE — Larger bore and bigger 2-in. reserve tube work together to hold more oil for greater capacity to allow the shock to work efficiently for controlled ride and longer service life
  • Nitrogen Gas Charged: For improved ride and handling, helps maintain tire to road contact by reducing aeration – on most applications
  • Sintered Iron Piston: Stronger than traditional metals, enhances durability for longer service life.
  • Special Seal: ‘Self-lubricating’ fluid seal designed to retain gas without excessive wear or friction.
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Skyjacker – Hydraulic, Twin Tube, Limited Lifetime Warranty, Non-Adjustable, Single (Part No.B8573)

Hydraulic, Twin Tube, Limited Lifetime Warranty, Non-Adjustable, Single

from

$69.99
The performance specific internal components of Skyjacker shocks respond to the on- and off-road conditions instantly. Whether you are going over rough or smooth terrain at slow or fast speeds, the true velocity sensitive valving produces a stable, controlled level of resistance for better handling, improved stability, and maximum comfort. The technological innovations of these durable, long lasting shocks from Skyjacker(R) deliver a noticeable advantage over the original equipment and other shock dampeners. Skyjacker shock absorbers deliver a safe, comfortable ride with improved handling and stability. They keep the tires in contact with the terrain and put you in control of the road ahead.

Product Features:
  • Twin Tube Construction
  • Advanced Foam-Cell Technology
  • Vehicle Specific Multi-Stage Valving
  • Increased Fluid Capacity For MAX Heat Dissipation
  • 360 Degree Arc-Welded End Mount And 180 Degree Directional Mounting
  • Chrome Plated Shaft And Sintered Iron Piston
  • Comes With Black Boot
See More

Skyjacker – Hydro Shock W/Red Boot (Part No.H7073)

Hydro Shock W/Red Boot

from

$52.99
HYDRO H7000 series shocks are recommended for multiple shock applications and mild to moderate off road use. Skyjacker(R) hydro shocks: Skyjacker(R) suspensions offers you a high quality shock absorber with true velocity sensitive valving. Shock absorbers, or spring dampers as it is called everywhere else except in the U.S, control the rate at which suspension springs compress and rebound. As the shock is pushed together, this is called bump or compression. As the shock expands, this is called rebound or extension. Absorbing the shock of bumps and suspension loading is actually performed by the springs in the suspension. The shock real job is controlling the energy stored in the springs. The performance specific internal components of Skyjacker shocks respond to the on and off road conditions instantly. Whether you are going over rough or smooth terrain at slow or fast speeds, the true velocity sensitive valving produces a stable, controlled level of resistance for better handling, improved stability, and maximum comfort. The technological innovations of these durable, long lasting shocks from Skyjacker(R) deliver a noticeable advantage over the original equipment and other shock dampeners. Skyjacker shock absorbers deliver a safe, comfortable ride with improved handling and stability. They keep the tires in contact with the terrain and put you in control of the road ahead

Product Features:
  • Hydraulic Action. Leak Proof Seal Prevents Hydraulic Fluid From Passing Around Piston Head For A Consistent And Reliable Ride
  • Multi Stage Velocity Sensitive Valving
  • Twin Tube Construction. DOM Tubing Reduces Internal Wear For Longer Product Life
  • Bonded Iron Piston For Durability And Longer Shock Life
  • Chromed Piston Rod Features Micro Polished Shaft For Improved Product Life And Performance
  • Orifice Disk For Axle Control In Any Condition
  • Red Polyurethane Bushings
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Monroe – Monroe Shock Absorber Air Hose Kit (Part No.AK18)

Monroe Shock Absorber Air Hose Kit

from

$36.49
Monroe® is one of the automotive industry’s best-known and most trusted original equipment and aftermarket brands, having delivered innovative undercar solutions to leading global OE manufacturers and generations of professional technicians and vehicle owners. This heritage of leading-edge products and exceptional customer support has made Monroe® shocks, struts and other ride control components a preferred choice of automotive professionals worldwide.
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Monroe – Monroe Shock Absorber Air Hose Kit (Part No.AK64)

Monroe Shock Absorber Air Hose Kit

from

$25.99
Monroe® is one of the automotive industry’s best-known and most trusted original equipment and aftermarket brands, having delivered innovative undercar solutions to leading global OE manufacturers and generations of professional technicians and vehicle owners. This heritage of leading-edge products and exceptional customer support has made Monroe® shocks, struts and other ride control components a preferred choice of automotive professionals worldwide.
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Monroe – Shock-Mate Shock Absorber Boot Kit (Part No.SA1997)

Shock-Mate Shock Absorber Boot Kit

from

$13.99
Monroe® Shock-Mate® Shock Absorber Boot Kits are universal replacement shock boots use to protect the shock’s piston rod from dirt, mud and other contaminants – protecting the life of your shocks.

Product Features:
  • Protects the shock’s piston rod from damage
  • Universal design for easy installation
  • Tie-strap included for a secure fit
  • Constructed from high quality urethane for maximum durability
  • Multiple color choices available
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1978 GMC K15 Suspension Parts

You count on your 1978 GMC K15 to run right. That means taking care of it with regular maintenance, necessary repairs, and the right parts. Advance Auto Parts can help with all of that thanks to our extensive inventory of trusted Suspension Parts. With 59 Suspension Parts ranging in price from $11.99 to $366.99, you’re sure to find everything you need for your 1978 GMC K15.

Brands matter. If you want to shop a specific Suspension Parts brand, we stock 11 different brands like Valvoline, Monroe, and Rancho. 1978 GMC K15 Suspension Parts start as low as $11.99!

One of the best ways to find top quality OEM or aftermarket Suspension Parts is by asking professionals. Short of that, you can shop with confidence thanks to our 476 extensive product reviews on 1978 GMC K15 Suspension Parts. Some of the top-rated Suspension Parts products we carry are RS5000 Shock Absorber with 3.9 stars and Leaf Spring Shackle Bushing with 2.8 stars.

Did we mention you can order your Suspension Parts from our online catalog and have them shipped right to your garage? Or, if you feel like seeing the parts first-hand, search for your nearest Advance Auto Parts location above and pick up in-store when you’re ready. Browse our full Suspension Parts inventory for your 1978 GMC K15 below to get started!

Top-Rated Suspension Parts Brands For Your 1978 GMC K15

Trusted Suspension Parts OEM and aftermarket product brands are what Advance Auto Parts specializes in. The brands we work with are sure to keep that 1978 GMC K15 running right for years to come. In our inventory you’ll find brands like Valvoline, Monroe, Rancho, and even more.

Popular Valvoline Suspension Parts

You’ll find popular Valvoline brand products across Air Suspension and Kits. All are waiting to get your 1978 GMC K15 back on the road. Some of the top-rated Valvoline products in these categories are:
DEXRON®-VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart
from $14.49
(2)
DEXRON®-VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart
Suspension Self-Leveling Unit Fluids

FAQs for 1978 GMC K15 Suspension Parts

What are the most purchased Suspension Parts for the 1978 GMC K15?

Out of 59 Suspension Parts for the 1978 GMC K15, the most popular in our inventory are:
DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart
from $11.99
This product is not rated
DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart
Suspension Self-Leveling Unit Fluids
Gas-Matic LT Shock Absorber
from $37.99
(6)
Gas-Matic LT Shock Absorber
Rear Shock and Struts
Gas-Matic LT Shock Absorber
from $35.99
(4)
Gas-Matic LT Shock Absorber
Rear Shock and Struts

What are the top-rated 1978 GMC K15 Suspension Parts?

Top-rated Suspension Parts for your 1978 GMC K15 based on customer reviews/ratings are:
RS5000 Shock Absorber
from $66.99
(7)
RS5000 Shock Absorber
“Installed on 1988 Ford F-150. Easy to install and all parts needed were included.”
Leaf Spring Shackle Bushing
from $29.99
(6)
Leaf Spring Shackle Bushing
“Just what I needed”
RS5000 Shock Absorber
from $66.99
(5)
RS5000 Shock Absorber
“Would buy again.”