Walker SoundFX Exhaust Muffler for 1979-1986 GMC C2500 4.1L 4.3L 4.8L 5.7L hs

• PREVENT DAMAGE: 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
• BUILT TO LAST: Walker SoundFX parts are designed and tested to extend muffler life. 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 structural stability and longer service life
• ENSURE PERFORMANCE: The muffler reduces the noise produced by your engine and controls the backpressure of the engine.
• EXCEPTIONAL DURABILITY AND COMPATIBILITY: This muffler offers exceptional durability, rust resistance, and weatherproof qualities. Its versatile design enables compatibility with a wide range of car models, ensuring a perfect fit and easy installation.
• RELY ON QUALITY EXHAUST SOLUTIONS: Walker Emissions Control is an industry leading brand of replacement emission control components and systems, including catalytic converters, complete cat-back exhaust systems, mufflers, pipes, resonators and related products for passenger car, light truck and SUVs, plus commercial and specialty vehicle applications. Walker products are backed by OE engineering and manufacturing expertise, delivering quality engine-to-tailpipe solutions to the aftermarket
• TRUST IN WALKER: With more than 100 years of expertise, the Walker brand helps set the standard in the replacement market for product quality, fitment, performance, coverage, technical training, business support and cataloging excellence. Each day thousands of repair professionals choose Walker components for their precise, original equipment-style fit and exceptional performance and durability

When it comes to quality exhaust system components, there's probably no other name in the industry that is as popular and often-heard as Walker. It is the world's largest manufacturer of OE and aftermarket exhaust systems and emissions control products. The company is also an OE supplier to many major vehicle manufacturers. Walker has the technical perfection needed to meet today's requirements while providing solutions for tomorrow's challenges. It was Walker that revolutionized the industry by establishing new standards for durability. It was the first aftermarket manufacturer to offer a Limited Lifetime Warranty for the professional installer. Today, the company continues designing and manufacturing new products that become synonymous with quality, longevity, and innovation. All Walker exhaust parts, from premium Quiet-Flow mufflers to CalCat converters, are designed with a great attention to detail to meet all customer demands. You can also go with Walker performance exhaust parts if you want to get the ultimate in sound and function.

Year Range	Make	Model	Notes
1979	GMC	C2500	5.7L V8;131.5;Optional;Soundfx For 21910;With Single Catalytic Converter
1979	GMC	C2500	5.7L V8;164.5;Optional;Soundfx For 21910
1979	GMC	C2500	6.6L V8;Optional;Soundfx For 21910;With Canada Emissions
1979	GMC	C2500	7.4L V8;Optional;Soundfx For 21910;With Canada Emissions
1980	GMC	C2500	4.1L L6;131.5;Optional;Soundfx For 21910;With Single Catalytic Converter
1980	GMC	C2500	4.8L L6;131.5;Before 1-1-85;Do Not Use With Fed. Emiss. Control Or H5D Emiss;Optional;Soundfx For 21910;Without Catalytic Converter
1980	GMC	C2500	4.8L L6;164.5;Before 1-1-85;Do Not Use With Fed. Emiss. Control Or H5D Emiss;Optional;Soundfx For 21910;Without Catalytic Converter
1980	GMC	C2500	5.7L V8;4BBL;131.5;H.D.;Do Not Use With H5D Emiss.;Optional;Soundfx For 21910;Without Catalytic Converter
1980	GMC	C2500	5.7L V8;4BBL;164.5;H.D.;Do Not Use With H5D Emiss.;Optional;Soundfx For 21910;Without Catalytic Converter
1981	GMC	C2500	4.1L L6;131.5;Optional;Soundfx For 21910;With Single Catalytic Converter
1981	GMC	C2500	4.8L L6;131.5;Before 1-1-85;Do Not Use With Fed. Emiss. Control Or H5D Emiss;Optional;Soundfx For 21910;Without Catalytic Converter
1981	GMC	C2500	4.8L L6;164.5;Before 1-1-85;Do Not Use With Fed. Emiss. Control Or H5D Emiss;Optional;Soundfx For 21910;Without Catalytic Converter
1981	GMC	C2500	5.7L V8;131.5;H.D.;Do Not Use With H5D Emiss.;Optional;Soundfx For 21910;Without Catalytic Converter
1981	GMC	C2500	5.7L V8;131.5;Optional;Soundfx For 21910;With Single Catalytic Converter
1981	GMC	C2500	5.7L V8;164.5;H.D.;Do Not Use With H5D Emiss.;Optional;Soundfx For 21910;Without Catalytic Converter
1982	GMC	C2500	4.1L L6;131.5;Optional;Soundfx For 21910;With Single Catalytic Converter
1982	GMC	C2500	4.8L L6;131.5;Before 1-1-85;Do Not Use With Fed. Emiss. Control Or H5D Emiss;Optional;Soundfx For 21910;Without Catalytic Converter
1982	GMC	C2500	4.8L L6;164.5;Before 1-1-85;Do Not Use With Fed. Emiss. Control Or H5D Emiss;Optional;Soundfx For 21910;Without Catalytic Converter
1982	GMC	C2500	5.7L V8;131.5;H.D.;Do Not Use With H5D Emiss.;Optional;Soundfx For 21910;Without Catalytic Converter
1982	GMC	C2500	5.7L V8;164.5;H.D.;Do Not Use With H5D Emiss.;Optional;Soundfx For 21910;Without Catalytic Converter
1983	GMC	C2500	4.1L L6;131.5;Optional;Soundfx For 21910;With Single Catalytic Converter
1983	GMC	C2500	4.8L L6;131.5;Before 1-1-85;Do Not Use With Fed. Emiss. Control Or H5D Emiss;Optional;Soundfx For 22329;Requires Pn[35103] Hanger.;Without Catalytic Converter
1983	GMC	C2500	4.8L L6;164.5;Before 1-1-85;Do Not Use With Fed. Emiss. Control Or H5D Emiss;Optional;Soundfx For 21910;Without Catalytic Converter
1983	GMC	C2500	5.7L V8;131.5;H.D.;Do Not Use With H5D Emiss.;Optional;Soundfx For 21910;Without Catalytic Converter
1983	GMC	C2500	5.7L V8;164.5;H.D.;Do Not Use With H5D Emiss.;Optional;Soundfx For 21910;Without Catalytic Converter
1984	GMC	C2500	4.1L L6;131.5;Optional;Soundfx For 21910;With Single Catalytic Converter
1984	GMC	C2500	4.8L L6;131.5;Before 1-1-85;Do Not Use With Fed. Emiss. Control Or H5D Emiss;Optional;Soundfx For 22329;Requires Pn[35103] Hanger.;Without Catalytic Converter
1984	GMC	C2500	4.8L L6;164.5;Before 1-1-85;Do Not Use With Fed. Emiss. Control Or H5D Emiss;Optional;Soundfx For 21910;Without Catalytic Converter
1984	GMC	C2500	5.7L V8;131.5;H.D.;Do Not Use With H5D Emiss.;Optional;Soundfx For 21910;Without Catalytic Converter
1984	GMC	C2500	5.7L V8;164.5;H.D.;Do Not Use With H5D Emiss.;Optional;Soundfx For 21910;Without Catalytic Converter
1985	GMC	C2500	4.3L V6;131.5;Optional;Soundfx For 21910
1985	GMC	C2500	4.8L L6;131.5;Before 1-1-85;Do Not Use With Fed. Emiss. Control Or H5D Emiss;Optional;Soundfx For 22329;Requires Pn[35103] Hanger.;Without Catalytic Converter
1985	GMC	C2500	4.8L L6;164.5;Before 1-1-85;Do Not Use With Fed. Emiss. Control Or H5D Emiss;Optional;Soundfx For 21910;Without Catalytic Converter
1985	GMC	C2500	5.7L V8;131.5;H.D.;Do Not Use With H5D Emiss.;Optional;Soundfx For 21910;Without Catalytic Converter
1985	GMC	C2500	5.7L V8;164.5;H.D.;Do Not Use With H5D Emiss.;Optional;Soundfx For 21910;Without Catalytic Converter
1986	GMC	C2500	4.3L V6;131.5;Optional;Soundfx For 21910
1986	GMC	C2500	5.7L V8;131.5;H.D.;Do Not Use With H5D Emiss.;Optional;Soundfx For 21910;Without Catalytic Converter
1986	GMC	C2500	5.7L V8;164.5;H.D.;Do Not Use With H5D Emiss.;Optional;Soundfx For 21910;Without Catalytic Converter

• To confirm that this part fits your vehicle, enter your vehicle's Year, Make, Model, Trim, and Engine in the eBay Compatibility Table.
• Many of the parts we sell at Sixity Auto only work with specific vehicles. Please double-check the accuracy of your order before purchasing. Check that the reference number, size, and placement are correct.

• If you have any questions, you may reach us via our eBay Contact Form.
• One of our outstanding customer service representatives from our US-based service centers will respond to your questions or feedback.

• Your order will be processed and shipped within one business day.
• We strive to ship every order promptly. We will email you a tracking number when your order ships.
• Once the tracking number is generated, please allow 24-48 hours for tracking movement to appear.
• Our smaller items are shipped via USPS First Class or DHL, while larger, heavier items are shipped via FedEx Ground or UPS. Some items offer faster shipping for a small fee. Please see the Shipping and payments eBay tab for more details on shipping rates and delivery times.
• Sorry, no local pickups available.
• We participate in the eBay global shipping program. Please see the Shipping and payments eBay tab for details on the countries we ship to outside of the U.S.

• Sixity Auto stands for value, selection, and quality. Our goal is to provide a 5-star shopping experience.
• We give all our customers positive eBay feedback. Please work with us by contacting us here if you have a problem, before leaving negative feedback.

• If you would like to return your new, unopened, and uninstalled part:


1. From within My eBay, click Purchases.
2. Find the item you ordered.
3. Below the Leave Feedback button, click [More Actions] > [Return This Item].
4. Select a reason. The most common reason is Doesn't Fit.
5. Add details like I tried to install this part, and it didn't fit.
6. Click [Request a Return].


• Returned parts will be inspected, and a refund given within 5 business days if the part is new, unopened, and uninstalled. Original shipping costs and a restocking fee may be deducted from your refund.
• If the item has been opened, installed, or used, we are unable to accept a return due to safety concerns.

We help drivers find top OEM-replacement auto parts from the best brands in the world at unbeatable prices with fast and free shipping. Try our fast shipping today: 99% of orders ship within 1 business day!

Our goal is to provide you with the best possible shopping experience through unsurpassed value, convenience, and selection. We strive to deliver on our core tenets for our value-conscious customer base including free and fast shipping*, a 100% fitment guarantee**, a U.S.-based Customer Service Center, and a limited 1-year warranty on Sixity-branded parts. Give us a try today - and thanks for shopping with us!

• Free, Fast Shipping*
• 100% Fitment Guarantee**
• 1-Year Limited Warranty on all Sixity-brand parts
• US-Based Customer Service Team
• Always Genuine OEM-Replacement Parts from the Best Brands
• All Parts Ship from the United States within 1 Business Day
• 5-Star Rated on Google, Sitejabber, Trustpilot, and A+ Rated by the BBB

* Free shipping applies to the lower 48 states. Certain items may require additional surcharges.
** We guarantee all parts sold under the Sixity brand will fit the vehicles they are advertised to fit.