1978 GMC C35 Truck Beds
Keep Your 1978 GMC C35 in Top Shape with Quality Truck Beds
Whether you’re repairing or upgrading your Truck Bed, using high-quality parts is key to keeping your 1978 GMC C35 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Truck Cap Side Steps, Truck Bed Floor Supports, and Truck Cab Mounts. 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 C35 Truck Bed at Advance Auto Parts is around $108.21, with a range that starts at $10.99 and goes up to $505.99. With 27 options in stock from 3 trusted brands, finding the right fit is easy. Popular picks like CARR Cab Mount, Multi-Fit, Set Of 2, Flat Step, Non-Extendable, Stationary, Aluminum, 124031, CARR Cab Mount, Multi-Fit, Set Of 2, Flat Step, Non-Extendable, Stationary, Aluminum, 124032, and KAI Truck Floor Support, GMK4144731733 start at just $94.99 and offer a great balance of form and function.
Explore Related Parts
While you’re upgrading or replacing your Truck Bed, don’t forget to check out other key components like Vehicle Hoods and Vehicle Windows. At Advance Auto Parts, we’re here to help you keep your 1978 GMC C35 in peak condition, inside and out.
Find Your Specific 1978 GMC C35 Truck Beds
Looking for the perfect Truck Bed for your 1978 GMC C35? You’re in the right place. Below, you’ll find links to various types of Truck Beds that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Truck Beds, ensuring durability and a precise fit for your GMC C35. Whether you’re driving a 1978 model or another popular model year like
1975,
1976, and
1977, we’ve got you covered. Purchasing Truck Beds from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Truck Beds that fit your vehicle.
Essential 1978 GMC C35 Truck Beds
KAI – KAI Bed Panel Patch, GMK4144690732L (Part No.GMK4144690732L)
from
$53.99
New Goodmark Driver Side Lower Rear Bedside Patch, For Longbed Fleetside Models, 31 Inches Long X 12 3/4 Inches High
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KAI – KAI Bed Panel Patch, GMK4144610731R (Part No.GMK4144610731R)
from
$77.99
New Goodmark Passenger Side Lower Front Bedside Patch, For Shortbed Fleetside Models
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KAI – KAI Truck Cab Support, GMK414451773R (Part No.GMK414451773R)
KAI – KAI Truck Cab Support, GMK414451773L (Part No.GMK414451773L)
KAI – KAI Truck Cab Mount, RRP2753 (Part No.RRP2753)
from
$96.99
New Standard Replacement Driver Or Passenger Side Rear Cab Body Mount, 1/2 Ton 4WD, All 3/4 Ton And 1 Ton Models, Use 2 Per Truck
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KAI – KAI Truck Bed Panel, GMK414482873R (Part No.GMK414482873R)
KAI – KAI Truck Bed Panel, GMK4145630812 (Part No.GMK4145630812)
KAI – KAI Truck Floor Support, GMK4140731541 (Part No.GMK4140731541)
from
$95.99
New Goodmark Pickup Box Floor Support, C/K Pickup, Stepside/Fenderside, Bed Cross Sill, Use 3 For Shortbed, 4 Or 5 For Longbed
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KAI – KAI Truck Floor Support, GMK4144731733 (Part No.GMK4144731733)
from
$94.99
New Goodmark Bed Cross Sill For Stepside Pickups, 3 Required For Short Bed Models, 5 Required For Long Bed Models
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KAI – KAI Truck Cab Corner, GMK4144485732R (Part No.GMK4144485732R)
from
$34.99
New Goodmark Passenger Side Outer Cab Corner, 18.9 Inches High X 13.9 Inches Wide X 4.3 Inches Deep
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KAI – KAI Truck Cab Corner, GMK4144485732L (Part No.GMK4144485732L)
from
$34.99
New Goodmark Driver Side Outer Cab Corner, 18.9 Inches High X 13.9 Inches Wide X 4.3 Inches Deep
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KAI – KAI Truck Cab Corner, RRP109 (Part No.RRP109)
from
$11.99
New Standard Replacement Passenger Side Cab Corner, Slip-On Type, 2 Door Regular Cab, 4.75 X 16
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CARR – CARR Cab Mount, Multi-Fit, Single, Flat Step, Polished Aluminum, 124032-1 (Part No.124032-1)
from
$189.99
The stylish and innovative design of these steps add to a vehicle rugged off-road look. Available in three low maintenance, extremely durable finishes to complement your vehicle appearance. Easily installed using our new multi mount system for superior strength and rigidity. Rocker panel installation provides for the strongest and easiest installation of any step products.
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CARR – CARR Cab Mount, Multi-Fit, Set Of 2, Flat Step, Non-Extendable, Stationary, Aluminum, 124031 (Part No.124031)
from
$279.99
The stylish and innovative design of these steps add to a vehicle rugged off road look. Available in three low maintenance, extremely durable finishes to complement your vehicle appearance. Easily installed using our new multi mount system for superior strength and rigidity. Rocker panel installation provides for the strongest and easiest installation of any step products.
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CARR – CARR Cab Mount, Multi-Fit, Single, Flat Step, Powder Coated, Black, Aluminum, 124031-1 (Part No.124031-1)
from
$174.99
The stylish and innovative design of these steps add to a vehicle rugged off-road look. Available in three low maintenance, extremely durable finishes to complement your vehicle appearance. Easily installed using our new multi mount system for superior strength and rigidity. Rocker panel installation provides for the strongest and easiest installation of any step products.
See More
CARR – CARR Cab Mount, Multi-Fit, Set Of 2, Flat Step, Non-Extendable, Stationary, Aluminum, 124032 (Part No.124032)
from
$252.99
The stylish and innovative design of these steps add to a vehicle rugged off road look. Available in three low maintenance, extremely durable finishes to complement your vehicle appearance. Easily installed using our new multi mount system for superior strength and rigidity. Rocker panel installation provides for the strongest and easiest installation of any step products.
See More
KAI – KAI Truck Bed Floor, LKQ1050767 (Part No.LKQ1050767)
from
$71.99
New Standard Replacement Driver Or Passenger Side Bed Floor Support, 71.63 X 4.5 X 3.13 Inches
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KAI – KAI Truck Bed Floor, GMK4144731731 (Part No.GMK4144731731)
from
$87.99
New Goodmark Pickup Bed Patch Piece, Fleetside, Bed Floor Patch, 49 Inches Long X 24 Inches Wide
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Extang – Extang Trifecta 2.0 tri-fold Tonneau Cover, Black vinyl, 75-87 C10 Series 8 Ft Bed, 92535 (Part No.92535)
from
$505.99
Extangs Trifecta Tri Fold Tonneau has an easy to use folding design, smooth sleek looks and unmatched durability. This user friendly soft tonneau requires no assembly, no drilling, and installation is as easy as positioning the cover on your truck, tightening the clamps and you’re ready to go. The Hold Tite Straps And Snaps, WeatherTuff Seals, and MaxHinges are all Extang Engineered in order to ensure the best in security and safety.
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KAI – KAI Truck Floor Support, RRP117 (Part No.RRP117)
KAI – KAI Truck Floor Support, RRP1170 (Part No.RRP1170)
Popular 1978 GMC C35 Truck Beds Categories
Most Popular Truck Cap Side Steps for 1978 GMC C35s
Enhance your 1978 GMC C35 with one of the 5 Truck Cap Side Steps we have in stock, starting at just $121.99.
CARR – CARR Cab Mount, Multi-Fit, Set Of 2, Flat Step, Non-Extendable, Stationary, Aluminum, 124031 (Part No.124031)
from
$279.99
The stylish and innovative design of these steps add to a vehicle rugged off road look. Available in three low maintenance, extremely durable finishes to complement your vehicle appearance. Easily installed using our new multi mount system for superior strength and rigidity. Rocker panel installation provides for the strongest and easiest installation of any step products.
See More
CARR – CARR Cab Mount, Multi-Fit, Set Of 2, Flat Step, Non-Extendable, Stationary, Aluminum, 124032 (Part No.124032)
from
$252.99
The stylish and innovative design of these steps add to a vehicle rugged off road look. Available in three low maintenance, extremely durable finishes to complement your vehicle appearance. Easily installed using our new multi mount system for superior strength and rigidity. Rocker panel installation provides for the strongest and easiest installation of any step products.
See More
CARR – CARR Cab Mount, Multi-Fit, Single, Flat Step, Polished Aluminum, 124032-1 (Part No.124032-1)
from
$189.99
The stylish and innovative design of these steps add to a vehicle rugged off-road look. Available in three low maintenance, extremely durable finishes to complement your vehicle appearance. Easily installed using our new multi mount system for superior strength and rigidity. Rocker panel installation provides for the strongest and easiest installation of any step products.
See More
CARR – CARR Cab Mount, Multi-Fit, Single, Flat Step, Powder Coated, Black, Aluminum, 124031-1 (Part No.124031-1)
from
$174.99
The stylish and innovative design of these steps add to a vehicle rugged off-road look. Available in three low maintenance, extremely durable finishes to complement your vehicle appearance. Easily installed using our new multi mount system for superior strength and rigidity. Rocker panel installation provides for the strongest and easiest installation of any step products.
See More
CARR – CARR Cab Mount, Multi-Fit, Set Of 2, Flat Step, Textured, Matte Black, Aluminum, 103991 (Part No.103991)
from
$121.99
Uniquely designed diamond tread pattern provides a safe non slip surface on the flat step area. Our exclusive multi mount system is designed for precision fit and easier installation. Constructed of an extremely strong die cast aluminum alloy for the ultimate in quality and durability. Rocker panel installation provides for the strongest and easiest installation of any step products.
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Best-Selling 1978 GMC C35 Truck Bed Floor Supports
Upgrade your C35 with one of our 2 best-selling Truck Bed Floor Supports.
KAI – KAI Truck Floor Support, GMK4144731733 (Part No.GMK4144731733)
from
$94.99
New Goodmark Bed Cross Sill For Stepside Pickups, 3 Required For Short Bed Models, 5 Required For Long Bed Models
See More
KAI – KAI Truck Floor Support, GMK4140731541 (Part No.GMK4140731541)
from
$95.99
New Goodmark Pickup Box Floor Support, C/K Pickup, Stepside/Fenderside, Bed Cross Sill, Use 3 For Shortbed, 4 Or 5 For Longbed
See More
Top-Quality Truck Cab Mounts for 1978 GMC C35s
Choose a high-quality OEM or aftermarket Truck Cab Mount for GMC C35s and enjoy top-notch performance from $96.99.
KAI – KAI Truck Cab Mount, RRP2753 (Part No.RRP2753)
from
$96.99
New Standard Replacement Driver Or Passenger Side Rear Cab Body Mount, 1/2 Ton 4WD, All 3/4 Ton And 1 Ton Models, Use 2 Per Truck
See More
Our Top Pick for a 1978 GMC C35 Tonneau Cover
Invest in a
durable Tonneau Cover for your 1978 GMC, knowing you’re getting trusted brands and expert craftsmanship.
Extang – Extang Trifecta 2.0 tri-fold Tonneau Cover, Black vinyl, 75-87 C10 Series 8 Ft Bed, 92535 (Part No.92535)
from
$505.99
Extangs Trifecta Tri Fold Tonneau has an easy to use folding design, smooth sleek looks and unmatched durability. This user friendly soft tonneau requires no assembly, no drilling, and installation is as easy as positioning the cover on your truck, tightening the clamps and you’re ready to go. The Hold Tite Straps And Snaps, WeatherTuff Seals, and MaxHinges are all Extang Engineered in order to ensure the best in security and safety.
See More
Truck Cab Corners for 1978 GMC C35s
Make a smart move for your 1978 GMC C35 with products all priced from $10.99 to $34.99.
KAI – KAI Truck Cab Corner, GMK4144485732L (Part No.GMK4144485732L)
from
$34.99
New Goodmark Driver Side Outer Cab Corner, 18.9 Inches High X 13.9 Inches Wide X 4.3 Inches Deep
See More
KAI – KAI Truck Cab Corner, GMK4144485732R (Part No.GMK4144485732R)
from
$34.99
New Goodmark Passenger Side Outer Cab Corner, 18.9 Inches High X 13.9 Inches Wide X 4.3 Inches Deep
See More
KAI – KAI Truck Cab Corner, GMK414448673L (Part No.GMK414448673L)
KAI – KAI Truck Cab Corner, GMK414448673R (Part No.GMK414448673R)
KAI – KAI Truck Cab Corner, RRP109 (Part No.RRP109)
from
$11.99
New Standard Replacement Passenger Side Cab Corner, Slip-On Type, 2 Door Regular Cab, 4.75 X 16
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KAI – KAI Truck Cab Corner, RRP110 (Part No.RRP110)
from
$10.99
New Standard Replacement Driver Side Cab Corner, Slip-On Type, 2 Door Regular Cab, 4.75 X 16
See More
FAQs for 1978 GMC C35 Truck Beds
What are the best-selling Truck Beds for 1978 GMC C35s?
Out of 27 Truck Beds that fit 1978 GMC C35s, the following parts are the top sellers:
- CARR Cab Mount, Multi-Fit, Set Of 2, Flat Step, Non-Extendable, Stationary, Aluminum, 124031 (11949282) – $279.99
- CARR Cab Mount, Multi-Fit, Set Of 2, Flat Step, Non-Extendable, Stationary, Aluminum, 124032 (11949357) – $252.99
- KAI Truck Floor Support, GMK4144731733 (11749771) – $94.99
What’s the price range for 1978 GMC C35 Truck Beds?
The prices of Truck Beds for the 1978 GMC C35 range from $10.99 up to $505.99 for the most premium parts.
What is the average price of a Truck Bed for a 1978 GMC C35?
The average price for Truck Beds for the 1978 GMC C35 is $108.21. Keep in mind the variety of part types within our Truck Bed category, where you are likely to find a wide range of prices across a variety of parts and components.
Does Advance Auto Parts sell Truck Beds for other GMC C35 model years?
What are the cheapest Truck Beds for my 1978 GMC C35?
The cheapest 1978 GMC C35 Truck Beds we carry are:
- KAI Truck Cab Corner, RRP110 (11756315) – $10.99
- KAI Truck Cab Corner, RRP109 (11755361) – $11.99
- KAI Truck Floor Support, RRP117 (11755220) – $14.99
- KAI Truck Cab Corner, GMK414448673L (11750584) – $25.99
- KAI Truck Cab Corner, GMK414448673R (11750550) – $25.99
Does Advance Auto Parts sell Truck Beds for any other 1978 GMC models?
Yes. We stock Truck Beds for 12 other popular 1978 GMC models. Some of the most popular are 1978 Jimmy Truck Beds, 1978 Caballero Truck Beds, 1978 K25 Truck Beds, 1978 K15 Truck Beds, and 1978 G25 Truck Beds.
What types of Truck Beds do you sell for my 1978 GMC C35?
As of 8/2/26, these are some of the most in-demand types of Truck Beds for a 1978 GMC C35:
Can I get help with 1978 GMC C35 Truck Bed orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about GMC Truck Beds and more.
What is your return policy for GMC C35 Truck Beds?
Advance Auto Parts keeps returns simple. For new GMC C35 Truck Beds and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.