1981 GMC C3500 Exhaust Mufflers
Keep Your 1981 GMC C3500 in Top Shape with Quality Exhaust Mufflers
Whether you’re repairing or upgrading your Exhaust Muffler, using high-quality parts is key to keeping your 1981 GMC C3500 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Mufflers. 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 1981 GMC C3500 Exhaust Muffler at Advance Auto Parts is around $74.81, with a range that starts at $58.99 and goes up to $96.99. With 6 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like SoundFX Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (OD), SoundFX Universal Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (OD), and Quiet-Flow SS Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (OD) start at just $72.99 and offer a great balance of form and function.
Explore Related Parts
While you’re upgrading or replacing your Exhaust Muffler, don’t forget to check out other key components like Catalytic Converters and Exhaust Manifold and Headers. At Advance Auto Parts, we’re here to help you keep your 1981 GMC C3500 in peak condition, inside and out.
Find Your Specific 1981 GMC C3500 Exhaust Mufflers
Looking for the perfect Exhaust Muffler for your 1981 GMC C3500? You’re in the right place. Below, you’ll find links to various types of Exhaust Mufflers that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Exhaust Mufflers, ensuring durability and a precise fit for your GMC C3500. Whether you’re driving a 1981 model or another popular model year like
1991,
1992,
1993,
1994,
1995,
1996,
1997,
1998, and
1999, we’ve got you covered. Purchasing Exhaust Mufflers 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 Exhaust Mufflers that fit your vehicle.
Essential 1981 GMC C3500 Exhaust Mufflers
Walker – SoundFX Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2" Outlet (ID) (Part No.18344)
from
$107.99
Featuring 100% aluminized steel for longer service life compared to low-carbon steel, Walker SoundFX direct-fit mufflers deliver quality appearance and favorable acoustics while mechanical interior joints and spun-locked heads provide durability.
Product Features:
See More
Product Features:
- RESISTS CORROSION – Aluminized steel construction and internal drainage system helps reduce corrosion
- BUILT TO LAST – Internal partitions and mechanically joined tubes allow expansion and contraction during temperature changes to minimize distortion while spun-locked heads and OE-style spot welds provide stability and longer service life
- EASY TO INSTALL – Direct-fit bolt-on replacement solution with OE-style hangers, brackets and pipe routings for easy installation that doesn’t require specialized fabrication and welding
- FACTORY SOUND – Louvered tubes help reduce radiated noise for factory-style sound quality compared to straight perforated tubes
- GET MORE MILES FROM YOUR MUFFLER – Designed and tested to extend muffler life
Walker – Quiet-Flow SS Direct Fit Exhaust Muffler 2.75" Inlet (ID) 2.75" Outlet (OD) (Part No.21046)
from
$142.99
Product Features:
See More
- CORROSION RESISTANT STAINLESS STEEL – The only broad-market muffler with 100% stainless-steel construction that delivers longer life versus aluminized mufflers while an internal drainage system reduces moisture collection
- EASY TO INSTALL – Direct-fit bolt-on replacement solution with OE-style hangers, brackets and pipe routings for easy installation and doesn’t require specialized fabrication and welding
- BUILT TO LAST – Internal partitions and mechanically joined tubes allow expansion and contraction during temperature changes to minimize distortion while spun-locked heads and OE-style spot welds provide stability and longer service life
- PREMIUM ACOUSTIC CONTROL – OE-style louvered tubes lower noise levels while OE-style domed heads help reduce radiated noise for premium factory-style sound quality compared to straight perforated tubes
- DESIGN VALIDATED – Acoustic and flow tested for quality OE-style sound you can count on
- BUY WITH CONFIDENCE – Comes with Walker’s limited warranty and exclusive 90-Day Safe and Sound Guarantee. Visit Walkerexhaust.com for details.
Walker – SoundFX Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2.75" Outlet (OD) (Part No.18906)
from
$112.99
Featuring 100% aluminized steel for longer service life compared to low-carbon steel, Walker SoundFX direct-fit mufflers deliver quality appearance and favorable acoustics while mechanical interior joints and spun-locked heads provide durability.
Product Features:
See More
Product Features:
- RESISTS CORROSION – Aluminized steel construction and internal drainage system helps reduce corrosion
- BUILT TO LAST – Internal partitions and mechanically joined tubes allow expansion and contraction during temperature changes to minimize distortion while spun-locked heads and OE-style spot welds provide stability and longer service life
- EASY TO INSTALL – Direct-fit bolt-on replacement solution with OE-style hangers, brackets and pipe routings for easy installation that doesn’t require specialized fabrication and welding
- FACTORY SOUND – Louvered tubes help reduce radiated noise for factory-style sound quality compared to straight perforated tubes
- GET MORE MILES FROM YOUR MUFFLER – Designed and tested to extend muffler life
Walker – SoundFX Direct Fit Exhaust Muffler 2.75" Inlet (ID) 2.75" Outlet (OD) (Part No.18216)
from
$91.99
Featuring 100% aluminized steel for longer service life compared to low-carbon steel, Walker SoundFX direct-fit mufflers deliver quality appearance and favorable acoustics while mechanical interior joints and spun-locked heads provide durability.
Product Features:
See More
Product Features:
- RESISTS CORROSION – Aluminized steel construction and internal drainage system helps reduce corrosion
- BUILT TO LAST – Internal partitions and mechanically joined tubes allow expansion and contraction during temperature changes to minimize distortion while spun-locked heads and OE-style spot welds provide stability and longer service life
- EASY TO INSTALL – Direct-fit bolt-on replacement solution with OE-style hangers, brackets and pipe routings for easy installation that doesn’t require specialized fabrication and welding
- FACTORY SOUND – Louvered tubes help reduce radiated noise for factory-style sound quality compared to straight perforated tubes
- GET MORE MILES FROM YOUR MUFFLER – Designed and tested to extend muffler life
Walker – Sound Solution Exhaust Muffler (Part No.18759)
from
$62.99
Sound Solution mufflers are engineered with 100% aluminized steel for longer service life compared to low carbon steel. These mufflers have mechanical interior joints for durability, And spun-locked heads for resistance to rupture from backfires. Sound Solution mufflers are available in a universal fitment style, with both quality appearance And favorable acoustics.
See More
Walker – Quiet-Flow SS Direct Fit Exhaust Muffler 3" Inlet (ID) 3" Outlet (OD) (Part No.22673)
from
$129.99
Product Features:
See More
- CORROSION RESISTANT STAINLESS STEEL – The only broad-market muffler with 100% stainless-steel construction that delivers longer life versus aluminized mufflers while an internal drainage system reduces moisture collection
- EASY TO INSTALL – Direct-fit bolt-on replacement solution with OE-style hangers, brackets and pipe routings for easy installation and doesn’t require specialized fabrication and welding
- BUILT TO LAST – Internal partitions and mechanically joined tubes allow expansion and contraction during temperature changes to minimize distortion while spun-locked heads and OE-style spot welds provide stability and longer service life
- PREMIUM ACOUSTIC CONTROL – OE-style louvered tubes lower noise levels while OE-style domed heads help reduce radiated noise for premium factory-style sound quality compared to straight perforated tubes
- DESIGN VALIDATED – Acoustic and flow tested for quality OE-style sound you can count on
- BUY WITH CONFIDENCE – Comes with Walker’s limited warranty and exclusive 90-Day Safe and Sound Guarantee. Visit Walkerexhaust.com for details.
Walker – Quiet-Flow SS Direct Fit Exhaust Muffler 3" Inlet (ID) 2.25" Outlet (ID) (Part No.22719)
from
$138.99
Product Features:
See More
- CORROSION RESISTANT STAINLESS STEEL – The only broad-market muffler with 100% stainless-steel construction that delivers longer life versus aluminized mufflers while an internal drainage system reduces moisture collection
- EASY TO INSTALL – Direct-fit bolt-on replacement solution with OE-style hangers, brackets and pipe routings for easy installation and doesn’t require specialized fabrication and welding
- BUILT TO LAST – Internal partitions and mechanically joined tubes allow expansion and contraction during temperature changes to minimize distortion while spun-locked heads and OE-style spot welds provide stability and longer service life
- PREMIUM ACOUSTIC CONTROL – OE-style louvered tubes lower noise levels while OE-style domed heads help reduce radiated noise for premium factory-style sound quality compared to straight perforated tubes
- DESIGN VALIDATED – Acoustic and flow tested for quality OE-style sound you can count on
- BUY WITH CONFIDENCE – Comes with Walker’s limited warranty and exclusive 90-Day Safe and Sound Guarantee. Visit Walkerexhaust.com for details.
Flowmaster Inc. – 50 Series Muffler, 2.5in Offset Inlet 2.5in Offset Outlet, Non-Reversible, Moderate Sound (Part No.52558)
from
$199.99
The Super 50 series muffler is a larger version of Flowmaster’s 50 series Delta Flow muffler. Originally designed for trucks and SUV’s, it is also well suited to muscle car and high performance applications. In addition, the larger case size significantly reduces interior resonance and provides a deep, rich tone along with mileage and power gains. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
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BRExhaust – Exhaust Muffler (Part No.100-5132)
from
$136.99
This BRExhaust replacement exhaust is engineered based on the original OEM design to ensure reliability, durability and performance. The ease of installation will save you time and effort, getting you back out on the road sooner. Each muffler features thicker hangers for added strength and fully welded, perforated tubes to guarantee a long service life.
See More
Walker – Quiet-Flow SS Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2.5" Outlet (OD) (Part No.21400)
from
$157.99
Product Features:
See More
- CORROSION RESISTANT STAINLESS STEEL – The only broad-market muffler with 100% stainless-steel construction that delivers longer life versus aluminized mufflers while an internal drainage system reduces moisture collection
- EASY TO INSTALL – Direct-fit bolt-on replacement solution with OE-style hangers, brackets and pipe routings for easy installation and doesn’t require specialized fabrication and welding
- BUILT TO LAST – Internal partitions and mechanically joined tubes allow expansion and contraction during temperature changes to minimize distortion while spun-locked heads and OE-style spot welds provide stability and longer service life
- PREMIUM ACOUSTIC CONTROL – OE-style louvered tubes lower noise levels while OE-style domed heads help reduce radiated noise for premium factory-style sound quality compared to straight perforated tubes
- DESIGN VALIDATED – Acoustic and flow tested for quality OE-style sound you can count on
- BUY WITH CONFIDENCE – Comes with Walker’s limited warranty and exclusive 90-Day Safe and Sound Guarantee. Visit Walkerexhaust.com for details.
BRExhaust – Exhaust Muffler (Part No.101-1170)
from
$58.99
This BRExhaust replacement exhaust is engineered based on the original OEM design to ensure reliability, durability and performance. The ease of installation will save you time and effort, getting you back out on the road sooner. Each muffler features thicker hangers for added strength and fully welded, perforated tubes to guarantee a long service life.
See More
Hooker Headers – Competition Turbo Muffler, 2.25in Offset Inlet 2.25in Center Outlet, Non-Reversible, Mild Sound (Part No.21005HKR)
from
$69.99
Competition Turbo Mufflers utilized a low back pressure baffle network designed to flow in either direction resulting in better performance and economy.
Product Features:
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Product Features:
- Low Backpressure Baffle Network
- Compact Design
- Improved Engine Efficiency
- Better Performance And Economy
- Throaty Sound On Acceleration
- Quiet At Idle And Cruising
- Double Wrapped Aluminized Steel
Walker – Quiet-Flow Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2" Outlet (OD) (Part No.21784)
from
$62.99
Product Features:
See More
- EASY TO INSTALL – Direct-fit bolt-on replacement solution with OE-style hangers, brackets and pipe routings for easy installation and doesn’t require specialized fabrication and welding
- RESISTS CORROSION – Internal drainage system helps reduce moisture collection
- BUILT TO LAST – Internal partitions and mechanically joined tubes allow expansion and contraction during temperature changes to minimize distortion while spun-locked heads and OE-style spot welds provide stability and longer service life
- PREMIUM ACOUSTIC CONTROL – OE-style louvered tubes lower noise levels while OE-style domed heads help reduce radiated noise for premium factory-style sound quality compared to straight perforated tubes
- DESIGN VALIDATED – Acoustic and flow tested for quality OE-style sound you can count on
- BUY WITH CONFIDENCE – Comes with Walker’s limited warranty and exclusive 90-Day Safe and Sound Guarantee. Visit Walkerexhaust.com for details.
Flowmaster Inc. – 50 Series Muffler, 2.5in Offset Inlet 2.5in Offset Outlet, Non-Reversible, Moderate Sound (Part No.842553)
from
$184.99
The three chamber design utilizes Flowmaster’s patented Delta Flow technology along with an internal tuning chamber to reduce sound inside the vehicle. Provides the same performance and exterior tone characteristics as the two chamber, but with less interior resonance. Constructed of 16 gauge 409S stainless steel and fully MIG welded for maximum durability.
See More
Walker – Quiet-Flow SS Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (OD) (Part No.22329)
from
$121.99
Product Features:
See More
- CORROSION RESISTANT STAINLESS STEEL – The only broad-market muffler with 100% stainless-steel construction that delivers longer life versus aluminized mufflers while an internal drainage system reduces moisture collection
- EASY TO INSTALL – Direct-fit bolt-on replacement solution with OE-style hangers, brackets and pipe routings for easy installation and doesn’t require specialized fabrication and welding
- BUILT TO LAST – Internal partitions and mechanically joined tubes allow expansion and contraction during temperature changes to minimize distortion while spun-locked heads and OE-style spot welds provide stability and longer service life
- PREMIUM ACOUSTIC CONTROL – OE-style louvered tubes lower noise levels while OE-style domed heads help reduce radiated noise for premium factory-style sound quality compared to straight perforated tubes
- DESIGN VALIDATED – Acoustic and flow tested for quality OE-style sound you can count on
- BUY WITH CONFIDENCE – Comes with Walker’s limited warranty and exclusive 90-Day Safe and Sound Guarantee. Visit Walkerexhaust.com for details.
Walker – SoundFX Universal Exhaust Muffler, 2.75" Inlet (ID) 2.75" Outlet (OD) (Part No.18138)
from
$75.99
Featuring 100% aluminized steel for longer service life compared to low-carbon steel, Walker SoundFX universal mufflers deliver quality appearance and favorable acoustics while mechanical interior joints and spun-locked heads provide durability.
Product Features:
See More
Product Features:
- RESISTS CORROSION : Aluminized steel construction and internal drainage system helps reduce corrosion
- BUILT TO LAST : Internal partitions and mechanically joined tubes allow expansion and contraction during temperature changes to minimize distortion while spun-locked heads and OE-style spot welds provide stability and longer service life
- FLEXIBLE SOLUTION : Customizable design features expandable bushings for easy fitment and may require specialized fabrication and/or welding for installation
- FACTORY SOUND : Louvered tubes help reduce radiated noise for factory-style sound quality compared to straight perforated tubes
- GET MORE MILES FROM YOUR MUFFLER : Designed and tested to extend muffler life
Walker – SoundFX Universal Exhaust Muffler 3" Inlet (ID) 2.25" Outlet (ID) (Part No.18133)
from
$89.99
Featuring 100% aluminized steel for longer service life compared to low-carbon steel, Walker SoundFX universal mufflers deliver quality appearance and favorable acoustics while mechanical interior joints and spun-locked heads provide durability.
Product Features:
See More
Product Features:
- RESISTS CORROSION — Aluminized steel construction and internal drainage system helps reduce corrosion
- BUILT TO LAST — Internal partitions and mechanically joined tubes allow expansion and contraction during temperature changes to minimize distortion while spun-locked heads and OE-style spot welds provide stability and longer service life
- FLEXIBLE SOLUTION — Customizable design features expandable bushings for easy fitment and may require specialized fabrication and/or welding for installation
- FACTORY SOUND — Louvered tubes help reduce radiated noise for factory-style sound quality compared to straight perforated tubes
- GET MORE MILES FROM YOUR MUFFLER — Designed and tested to extend muffler life
BRExhaust – Exhaust Muffler (Part No.100-5086)
from
$72.99
This BRExhaust replacement exhaust is engineered based on the original OEM design to ensure reliability, durability and performance. The ease of installation will save you time and effort, getting you back out on the road sooner. Each muffler features thicker hangers for added strength and fully welded, perforated tubes to guarantee a long service life.
See More
Walker – SoundFX Direct Fit Exhaust Muffler 3" Inlet (ID) 2.25" Outlet (ID) (Part No.18202)
from
$94.99
Featuring 100% aluminized steel for longer service life compared to low-carbon steel, Walker SoundFX direct-fit mufflers deliver quality appearance and favorable acoustics while mechanical interior joints and spun-locked heads provide durability.
Product Features:
See More
Product Features:
- RESISTS CORROSION – Aluminized steel construction and internal drainage system helps reduce corrosion
- BUILT TO LAST – Internal partitions and mechanically joined tubes allow expansion and contraction during temperature changes to minimize distortion while spun-locked heads and OE-style spot welds provide stability and longer service life
- EASY TO INSTALL – Direct-fit bolt-on replacement solution with OE-style hangers, brackets and pipe routings for easy installation that doesn’t require specialized fabrication and welding
- FACTORY SOUND – Louvered tubes help reduce radiated noise for factory-style sound quality compared to straight perforated tubes
- GET MORE MILES FROM YOUR MUFFLER – Designed and tested to extend muffler life
BRExhaust – Exhaust Muffler (Part No.101-1176)
from
$76.99
This BRExhaust replacement exhaust is engineered based on the original OEM design to ensure reliability, durability and performance. The ease of installation will save you time and effort, getting you back out on the road sooner. Each muffler features thicker hangers for added strength and fully welded, perforated tubes to guarantee a long service life.
See More
Walker – SoundFX Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2" Outlet (ID) (Part No.18337)
from
$75.99
Featuring 100% aluminized steel for longer service life compared to low-carbon steel, Walker SoundFX direct-fit mufflers deliver quality appearance and favorable acoustics while mechanical interior joints and spun-locked heads provide durability.
Product Features:
See More
Product Features:
- RESISTS CORROSION – Aluminized steel construction and internal drainage system helps reduce corrosion
- BUILT TO LAST – Internal partitions and mechanically joined tubes allow expansion and contraction during temperature changes to minimize distortion while spun-locked heads and OE-style spot welds provide stability and longer service life
- EASY TO INSTALL – Direct-fit bolt-on replacement solution with OE-style hangers, brackets and pipe routings for easy installation that doesn’t require specialized fabrication and welding
- FACTORY SOUND – Louvered tubes help reduce radiated noise for factory-style sound quality compared to straight perforated tubes
- GET MORE MILES FROM YOUR MUFFLER – Designed and tested to extend muffler life
Walker – Sound Solution Exhaust Muffler (Part No.18742)
from
$64.99
Sound Solution mufflers are engineered with 100% aluminized steel for longer service life compared to low carbon steel. These mufflers have mechanical interior joints for durability, And spun-locked heads for resistance to rupture from backfires. Sound Solution mufflers are available in a universal fitment style, with both quality appearance And favorable acoustics.
Product Features:
See More
Product Features:
- Aluminized steel construction for corrosion resistance and durability
- Mechanical interior joints for durability
- Spun-locked heads for rupture resistance
- Tube-and-partition style interior design
- Universal mufflers may require modifications to complete installation
- Spot welded bushings provide stability and system support
- Some mufflers available with reinforced bracketed heads
Walker – SoundFX Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (OD) (Part No.18274)
from
$72.99
Featuring 100% aluminized steel for longer service life compared to low-carbon steel, Walker SoundFX direct-fit mufflers deliver quality appearance and favorable acoustics while mechanical interior joints and spun-locked heads provide durability.
Product Features:
See More
Product Features:
- RESISTS CORROSION – Aluminized steel construction and internal drainage system helps reduce corrosion
- BUILT TO LAST – Internal partitions and mechanically joined tubes allow expansion and contraction during temperature changes to minimize distortion while spun-locked heads and OE-style spot welds provide stability and longer service life
- EASY TO INSTALL – Direct-fit bolt-on replacement solution with OE-style hangers, brackets and pipe routings for easy installation that doesn’t require specialized fabrication and welding
- FACTORY SOUND – Louvered tubes help reduce radiated noise for factory-style sound quality compared to straight perforated tubes
- GET MORE MILES FROM YOUR MUFFLER – Designed and tested to extend muffler life
BRExhaust – Exhaust Muffler Assembly (Part No.100-5140)
from
$336.99
This BRExhaust muffler assembly is constructed by one of the leading aftermarket suppliers to provide OE-style performance and maintain a factory-like sound. The direct-fit configuration allows for easy, bolt-on installation with no modifications required. The component is designed to offer corrosion protection in addition to optimal noise reduction and low backpressure. Built from 16-gauge steel tubing and fully aluminized, these mufflers feature an OE-style direct fit configuration compatible with your import or domestic vehicle-while the interior design of the muffler box ensures quiet performance.
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Walker – Sound Solution Exhaust Muffler (Part No.18761)
from
$76.99
Sound Solution mufflers are engineered with 100% aluminized steel for longer service life compared to low carbon steel. These mufflers have mechanical interior joints for durability, And spun-locked heads for resistance to rupture from backfires. Sound Solution mufflers are available in a universal fitment style, with both quality appearance And favorable acoustics.
See More
Walker – Quiet-Flow SS Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (OD) (Part No.21910)
from
$96.99
Product Features:
See More
- CORROSION RESISTANT STAINLESS STEEL – The only broad-market muffler with 100% stainless-steel construction that delivers longer life versus aluminized mufflers while an internal drainage system reduces moisture collection
- EASY TO INSTALL – Direct-fit bolt-on replacement solution with OE-style hangers, brackets and pipe routings for easy installation and doesn’t require specialized fabrication and welding
- BUILT TO LAST – Internal partitions and mechanically joined tubes allow expansion and contraction during temperature changes to minimize distortion while spun-locked heads and OE-style spot welds provide stability and longer service life
- PREMIUM ACOUSTIC CONTROL – OE-style louvered tubes lower noise levels while OE-style domed heads help reduce radiated noise for premium factory-style sound quality compared to straight perforated tubes
- DESIGN VALIDATED – Acoustic and flow tested for quality OE-style sound you can count on
- BUY WITH CONFIDENCE – Comes with Walker’s limited warranty and exclusive 90-Day Safe and Sound Guarantee. Visit Walkerexhaust.com for details.
Walker – SoundFX Universal Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (OD) (Part No.18124)
from
$77.99
Featuring 100% aluminized steel for longer service life compared to low-carbon steel, Walker SoundFX universal mufflers deliver quality appearance and favorable acoustics while mechanical interior joints and spun-locked heads provide durability.
Product Features:
See More
Product Features:
- RESISTS CORROSION — Aluminized steel construction and internal drainage system helps reduce corrosion
- BUILT TO LAST — Internal partitions and mechanically joined tubes allow expansion and contraction during temperature changes to minimize distortion while spun-locked heads and OE-style spot welds provide stability and longer service life
- FLEXIBLE SOLUTION — Customizable design features expandable bushings for easy fitment and may require specialized fabrication and/or welding for installation
- FACTORY SOUND — Louvered tubes help reduce radiated noise for factory-style sound quality compared to straight perforated tubes
- GET MORE MILES FROM YOUR MUFFLER — Designed and tested to extend muffler life
Popular 1981 GMC C3500 Exhaust Mufflers Categories
Most Popular Mufflers for 1981 GMC C3500s
Enhance your 1981 GMC C3500 with one of the 6 Mufflers we have in stock, starting at just $58.99.
Walker – SoundFX Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (OD) (Part No.18274)
from
$72.99
Featuring 100% aluminized steel for longer service life compared to low-carbon steel, Walker SoundFX direct-fit mufflers deliver quality appearance and favorable acoustics while mechanical interior joints and spun-locked heads provide durability.
Product Features:
See More
Product Features:
- RESISTS CORROSION – Aluminized steel construction and internal drainage system helps reduce corrosion
- BUILT TO LAST – Internal partitions and mechanically joined tubes allow expansion and contraction during temperature changes to minimize distortion while spun-locked heads and OE-style spot welds provide stability and longer service life
- EASY TO INSTALL – Direct-fit bolt-on replacement solution with OE-style hangers, brackets and pipe routings for easy installation that doesn’t require specialized fabrication and welding
- FACTORY SOUND – Louvered tubes help reduce radiated noise for factory-style sound quality compared to straight perforated tubes
- GET MORE MILES FROM YOUR MUFFLER – Designed and tested to extend muffler life
Walker – SoundFX Universal Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (OD) (Part No.18124)
from
$77.99
Featuring 100% aluminized steel for longer service life compared to low-carbon steel, Walker SoundFX universal mufflers deliver quality appearance and favorable acoustics while mechanical interior joints and spun-locked heads provide durability.
Product Features:
See More
Product Features:
- RESISTS CORROSION — Aluminized steel construction and internal drainage system helps reduce corrosion
- BUILT TO LAST — Internal partitions and mechanically joined tubes allow expansion and contraction during temperature changes to minimize distortion while spun-locked heads and OE-style spot welds provide stability and longer service life
- FLEXIBLE SOLUTION — Customizable design features expandable bushings for easy fitment and may require specialized fabrication and/or welding for installation
- FACTORY SOUND — Louvered tubes help reduce radiated noise for factory-style sound quality compared to straight perforated tubes
- GET MORE MILES FROM YOUR MUFFLER — Designed and tested to extend muffler life
Walker – Quiet-Flow SS Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (OD) (Part No.21910)
from
$96.99
Product Features:
See More
- CORROSION RESISTANT STAINLESS STEEL – The only broad-market muffler with 100% stainless-steel construction that delivers longer life versus aluminized mufflers while an internal drainage system reduces moisture collection
- EASY TO INSTALL – Direct-fit bolt-on replacement solution with OE-style hangers, brackets and pipe routings for easy installation and doesn’t require specialized fabrication and welding
- BUILT TO LAST – Internal partitions and mechanically joined tubes allow expansion and contraction during temperature changes to minimize distortion while spun-locked heads and OE-style spot welds provide stability and longer service life
- PREMIUM ACOUSTIC CONTROL – OE-style louvered tubes lower noise levels while OE-style domed heads help reduce radiated noise for premium factory-style sound quality compared to straight perforated tubes
- DESIGN VALIDATED – Acoustic and flow tested for quality OE-style sound you can count on
- BUY WITH CONFIDENCE – Comes with Walker’s limited warranty and exclusive 90-Day Safe and Sound Guarantee. Visit Walkerexhaust.com for details.
Walker – Quiet-Flow Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2" Outlet (OD) (Part No.21784)
from
$62.99
Product Features:
See More
- EASY TO INSTALL – Direct-fit bolt-on replacement solution with OE-style hangers, brackets and pipe routings for easy installation and doesn’t require specialized fabrication and welding
- RESISTS CORROSION – Internal drainage system helps reduce moisture collection
- BUILT TO LAST – Internal partitions and mechanically joined tubes allow expansion and contraction during temperature changes to minimize distortion while spun-locked heads and OE-style spot welds provide stability and longer service life
- PREMIUM ACOUSTIC CONTROL – OE-style louvered tubes lower noise levels while OE-style domed heads help reduce radiated noise for premium factory-style sound quality compared to straight perforated tubes
- DESIGN VALIDATED – Acoustic and flow tested for quality OE-style sound you can count on
- BUY WITH CONFIDENCE – Comes with Walker’s limited warranty and exclusive 90-Day Safe and Sound Guarantee. Visit Walkerexhaust.com for details.
BRExhaust – Exhaust Muffler (Part No.100-5086)
from
$72.99
This BRExhaust replacement exhaust is engineered based on the original OEM design to ensure reliability, durability and performance. The ease of installation will save you time and effort, getting you back out on the road sooner. Each muffler features thicker hangers for added strength and fully welded, perforated tubes to guarantee a long service life.
See More
BRExhaust – Exhaust Muffler (Part No.101-1170)
from
$58.99
This BRExhaust replacement exhaust is engineered based on the original OEM design to ensure reliability, durability and performance. The ease of installation will save you time and effort, getting you back out on the road sooner. Each muffler features thicker hangers for added strength and fully welded, perforated tubes to guarantee a long service life.
See More
FAQs for 1981 GMC C3500 Exhaust Mufflers
What are the best-selling Exhaust Mufflers for 1981 GMC C3500s?
Out of 6 Exhaust Mufflers that fit 1981 GMC C3500s, the following parts are the top sellers:
- SoundFX Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (OD) (10994237) – $72.99
- SoundFX Universal Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (OD) (11504395) – $77.99
- Quiet-Flow SS Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (OD) (5290570) – $96.99
What’s the price range for 1981 GMC C3500 Exhaust Mufflers?
The prices of Exhaust Mufflers for the 1981 GMC C3500 range from $58.99 up to $96.99 for the most premium parts.
What is the average price of an Exhaust Muffler for a 1981 GMC C3500?
The average price for Exhaust Mufflers for the 1981 GMC C3500 is $74.81. Keep in mind the variety of part types within our Exhaust Muffler category, where you are likely to find a wide range of prices across a variety of parts and components.
Does Advance Auto Parts sell Exhaust Mufflers for other GMC C3500 model years?
What are the cheapest Exhaust Mufflers for my 1981 GMC C3500?
The cheapest 1981 GMC C3500 Exhaust Mufflers we carry are:
- Exhaust Muffler (50170691) – $58.99
- Quiet-Flow Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2" Outlet (OD) (5290414) – $62.99
- SoundFX Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (OD) (10994237) – $72.99
- Exhaust Muffler (50170740) – $72.99
- SoundFX Universal Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (OD) (11504395) – $77.99
Does Advance Auto Parts sell Exhaust Mufflers for any other 1981 GMC models?
Yes. We stock Exhaust Mufflers for 12 other popular 1981 GMC models. Some of the most popular are 1981 Jimmy Exhaust Mufflers, 1981 K2500 Exhaust Mufflers, 1981 C2500 Exhaust Mufflers, 1981 K1500 Exhaust Mufflers, and 1981 C1500 Exhaust Mufflers.
What types of Exhaust Mufflers do you sell for my 1981 GMC C3500?
We currently have just 1 Exhaust Muffler in stock for a 1981 GMC C3500, and as of 11/2/25, it is a Muffler.
Can I get help with 1981 GMC C3500 Exhaust Muffler orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about GMC Exhaust Mufflers and more.
What is your return policy for GMC C3500 Exhaust Mufflers?
Advance Auto Parts keeps returns simple. For new GMC C3500 Exhaust Mufflers and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.