1978 GMC Jimmy Performance Exhaust Mufflers

Your 1978 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 Performance Exhaust Mufflers you desperately need.

We currently carry 3 Performance Exhaust Mufflers to choose from for your 1978 GMC Jimmy, and our inventory prices range from as little as $99.99 up to $148.99.

On top of low prices, Advance Auto Parts offers 1 different trusted brands of Performance Exhaust Mufflers for the 1978 GMC Jimmy. We only sell parts from trusted brands like Flowmaster Inc. 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 8 reviews on our Performance Exhaust Mufflers for the 1978 GMC Jimmy from previous customers.

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

Performance Exhaust Mufflers for Your 1978 GMC Jimmy

Flowmaster Inc. – 40 Series Muffler, 2.25in Offset Inlet 2.25in Offset Outlet, Non-Reversible, Aggressive Sound (Part No.42443)

40 Series Muffler, 2.25in Offset Inlet 2.25in Offset Outlet, 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.
See More

(3 reviews)
View Product

Flowmaster Inc. – 40 Series Muffler, 2.25in Offset Inlet 2.25in Offset Outlet, Non-Reversible, Aggressive Sound (Part No.8042443)

40 Series Muffler, 2.25in Offset Inlet 2.25in Offset Outlet, 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.
See More

(1 reviews)
View Product

Flowmaster Inc. – Super 50 Muffler – 2.25 Offset In / 2.25 Offset Out – Mild Sound (Part No.52458)

Super 50 Muffler - 2.25 Offset In / 2.25 Offset Out - Mild Sound

from

$148.99
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.
See More
View Product

FAQs for 1978 GMC Jimmy Performance Exhaust Mufflers

What are the most popular Performance Exhaust Mufflers for the 1978 GMC Jimmy?

With 1 brands you can trust, our most popular Performance Exhaust Mufflers for the 1978 GMC Jimmy parts are:
40 Series Muffler, 2.25in Offset Inlet 2.25in Offset Outlet, Non-Reversible, Aggressive Sound
from $99.99
(3)
40 Series Muffler, 2.25in Offset Inlet 2.25in Offset Outlet, Non-Reversible, Aggressive Sound
Performance Exhaust Mufflers
40 Series Muffler, 2.25in Offset Inlet 2.25in Offset Outlet, Non-Reversible, Aggressive Sound
from $122.99
(1)
40 Series Muffler, 2.25in Offset Inlet 2.25in Offset Outlet, Non-Reversible, Aggressive Sound
Performance Exhaust Mufflers
Super 50 Muffler - 2.25 Offset In / 2.25 Offset Out - Mild Sound
from $148.99
This product is not rated
Super 50 Muffler – 2.25 Offset In / 2.25 Offset Out – Mild Sound
Performance Exhaust Mufflers

More Popular Parts for All Makes