1991 GMC Jimmy Mufflers

Your 1991 GMC Jimmy might be the best vehicle you’ve ever owned. Or you may just be struggling to keep it highway-approved. No matter the situation, Advance Auto Parts has the Mufflers you desperately need.

We currently carry 7 Mufflers to choose from for your 1991 GMC Jimmy, and our inventory prices range from as little as $64.99 up to $153.99.

On top of low prices, Advance Auto Parts offers 2 different trusted brands of Mufflers for the 1991 GMC Jimmy. We only sell parts from trusted brands like Walker so that you can find quality parts you can count on.

Don’t take our word for it – check out customer ratings and reviews to buy with confidence. We have 2 reviews on our Mufflers for the 1991 GMC Jimmy from previous customers.

Have parts delivered straight to your home, or find the nearest Advance Auto Parts store to check out our Mufflers stock in-person!

Mufflers for Your 1991 GMC Jimmy

Flowmaster Inc. – 40 Series Muffler, 3in Offset Inlet 3in Center Outlet, 13in long, Non-Reversible, Aggressive Sound (Part No.8043041)

40 Series Muffler, 3in Offset Inlet 3in Center Outlet, 13in long, Non-Reversible, Aggressive Sound

from

$122.99
The Original 40 series muffler delivers an aggressive exterior and interior tone. If you’re looking for that original Flowmaster sound this is the muffler is for you. Constructed of 16 gauge 409S stainless steel and fully MIG welded for maximum durability.
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Walker – Sound Solution Muffler (Part No.18751)

Sound Solution Muffler

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$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.
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Walker – Quiet-Flow Muffler, Direct Replacement, No Fabrication Needed (Part No.21054)

Quiet-Flow Muffler, Direct Replacement, No Fabrication Needed

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$109.99
The only broad-market muffler with 100% stainless-steel construction, Walker® Quiet-Flow® SS mufflers feature precision fit, superior flow and OE-style sound. Quiet-Flow SS mufflers are available for most domestic and import vehicles.

Product Features:
  • 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/or 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
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Flowmaster Inc. – 40 Series Muffler, 3in Offset Inlet 3in Center Outlet, 13in long, Non-Reversible, Aggressive Sound (Part No.43041)

40 Series Muffler, 3in Offset Inlet 3in Center Outlet, 13in long, Non-Reversible, Aggressive Sound

from

$99.99
The Original 40 series muffler delivers an aggressive exterior and interior tone. If you’re looking for that original Flowmaster sound this is the muffler is for you. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
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Walker – SoundFX Muffler, Direct Replacement, No Fabrication Needed (Part No.18229)

SoundFX Muffler, Direct Replacement, No Fabrication Needed

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:
  • 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/or 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
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Flowmaster Inc. – Super 40 Series Muffler, 3in Offset Inlet 3in Center Outlet, Non-Reversible, Aggressive Sound (Part No.853046)

Super 40 Series Muffler, 3in Offset Inlet 3in Center Outlet, Non-Reversible, Aggressive Sound

from

$153.99
The Super 40 features Flowmaster’s Delta Flow technology. It’s larger case profile provides the best of both worlds of performance and sound. The Super 40 has that deep powerful sound of the Original 40 series but with all the benefits of performance and low interior resonance from the Delta Flow technology. Constructed of 16 gauge 409S stainless steel and fully MIG welded for maximum durability.

Product Features:
  • Durable fully welded 409 stainless steel
  • Noticeable interior resonance
  • Deep aggressive exhaust note
  • Excellent performance on high horsepower vehicles
  • Made in the USA
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Flowmaster Inc. – 40 Series Muffler, 3in Offset Inlet 3in Center Outlet, 13in long, Non-Reversible, Aggressive Sound (Part No.943041)

40 Series Muffler, 3in Offset Inlet 3in Center Outlet, 13in long, Non-Reversible, Aggressive Sound

from

$126.99
This two chamber design incorporates Flowmaster’s patented Delta Flow technology. The Delta deflectors generate increased scavenging for better performance and reduced interior sound. Milder exterior tone and reduced interior resonance over Original 40 series. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
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