1977 GMC C15 Exhaust Mufflers
Keep Your 1977 GMC C15 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 1977 GMC C15 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 1977 GMC C15 Exhaust Muffler at Advance Auto Parts is around $65.06, with a range that starts at $58.99 and goes up to $78.99. With 5 options in stock from 3 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 Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2" Outlet (OD) start at just $61.99 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 1977 GMC C15 in peak condition, inside and out.
Find Your Specific 1977 GMC C15 Exhaust Mufflers
Looking for the perfect Exhaust Muffler for your 1977 GMC C15? 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 C15. Whether you’re driving a 1977 model or another popular model year like
1975,
1976, and
1978, 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 1977 GMC C15 Exhaust Mufflers
Walker – SoundFX Universal Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (OD) (Part No.18124)
from
$61.99
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:
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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.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.
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Walker – Quiet-Flow Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2" Outlet (OD) (Part No.21784)
from
$62.99
Product Features:
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- 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.
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 – Quiet-Flow SS Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (OD) (Part No.22329)
from
$121.99
Product Features:
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- 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.
Popular 1977 GMC C15 Exhaust Mufflers Categories
Most Popular Mufflers for 1977 GMC C15s
Enhance your 1977 GMC C15 with one of the 5 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
$61.99
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 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. – Flowmaster Flow FX Muffler (Part No.71236)
from
$78.99
Flowmaster’s Flow FX series mufflers deliver a moderate performance tone for the enthusiast looking for an exhaust note that is different from the “chambered” muffler sound. The interior features a large 3.00-inch “straight-through” stainless steel perforated core, surrounded with high-temperature sound absorption materials delivering a deep traditional mellow tone. The internal flow design is reversible, so the muffler can be installed in either direction to best suit the vehicle application and offsets needed. Features include fully MIG-welded “bright” 409 stainless steel construction with the Flow FX logo embossed on both sides of the case. The Flow FX line of mufflers is perfect for the person looking for a show quality performance muffler at an economical price point and in a compact sized case.
Product Features:
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Product Features:
- Flowmaster quality
- Straight through design
- Moderate exterior performance tone
- Durable fully welded 409S stainless steel case
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 1977 GMC C15 Exhaust Mufflers
What are the best-selling Exhaust Mufflers for 1977 GMC C15s?
Out of 5 Exhaust Mufflers that fit 1977 GMC C15s, 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) – $61.99
- Quiet-Flow Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2" Outlet (OD) (5290414) – $62.99
What’s the price range for 1977 GMC C15 Exhaust Mufflers?
The prices of Exhaust Mufflers for the 1977 GMC C15 range from $58.99 up to $78.99 for the most premium parts.
What is the average price of an Exhaust Muffler for a 1977 GMC C15?
The average price for Exhaust Mufflers for the 1977 GMC C15 is $65.06. 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 C15 model years?
What are the cheapest Exhaust Mufflers for my 1977 GMC C15?
The cheapest 1977 GMC C15 Exhaust Mufflers we carry are:
- Exhaust Muffler (50170691) – $58.99
- SoundFX Universal Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (OD) (11504395) – $61.99
- 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
- Flowmaster Flow FX Muffler (50323868) – $78.99
Does Advance Auto Parts sell Exhaust Mufflers for any other 1977 GMC models?
Yes. We stock Exhaust Mufflers for 12 other popular 1977 GMC models. Some of the most popular are 1977 Jimmy Exhaust Mufflers, 1977 K25 Exhaust Mufflers, 1977 K15 Exhaust Mufflers, 1977 G25 Exhaust Mufflers, and 1977 C25 Exhaust Mufflers.
What types of Exhaust Mufflers do you sell for my 1977 GMC C15?
We currently have just 1 Exhaust Muffler in stock for a 1977 GMC C15, and as of 3/1/26, it is a Muffler.
Can I get help with 1977 GMC C15 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 C15 Exhaust Mufflers?
Advance Auto Parts keeps returns simple. For new GMC C15 Exhaust Mufflers and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.