1978 Cadillac Eldorado Exhaust Mufflers
Keep Your 1978 Cadillac Eldorado 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 1978 Cadillac Eldorado 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 1978 Cadillac Eldorado Exhaust Muffler at Advance Auto Parts is around $76.99, with a range that starts at $63.99 and goes up to $101.99. With 3 options in stock from one trusted brand, finding the right fit is easy. Popular picks like SoundFX Universal Universal Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (ID) start at just $63.99 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 Fittings. At Advance Auto Parts, we’re here to help you keep your 1978 Cadillac Eldorado in peak condition, inside and out.
Find Your Specific 1978 Cadillac Eldorado Exhaust Mufflers
Looking for the perfect Exhaust Muffler for your 1978 Cadillac Eldorado? 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 Cadillac Eldorado. Whether you’re driving a 1978 model or another popular model year like
1989,
1990,
1991,
1992,
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 1978 Cadillac Eldorado Exhaust Mufflers
Walker – SoundFX Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (ID) (Part No.18831)
from
$67.99
Walker SoundFX direct-fit mufflers are engineered with 100% aluminized steel for longer service life compared to low-carbon steel. Featuring mechanical interior joints and spun-locked heads for durability and stability, SoundFX mufflers deliver quality appearance and favorable acoustics.
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/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
Walker – SoundFX Universal Universal Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (ID) (Part No.18112)
from
$63.99
Walker SoundFX universal mufflers are engineered with 100% aluminized steel for longer service life compared to low-carbon steel. Featuring mechanical interior joints for durability and spun-locked heads for stability, SoundFX mufflers deliver quality appearance and favorable acoustics.
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 Direct Fit Exhaust Muffler 2.25" Inlet (ID) 2.25" Outlet (ID) (Part No.18387)
from
$73.99
Walker SoundFX direct-fit mufflers are engineered with 100% aluminized steel for longer service life compared to low-carbon steel. Featuring mechanical interior joints and spun-locked heads for durability and stability, SoundFX mufflers deliver quality appearance and favorable acoustics.
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/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
Walker – Sound Solution Exhaust Muffler (Part No.18649)
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 – Sound Solution Exhaust Muffler (Part No.18692)
from
$67.99
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
Flowmaster Inc. – 50 Series Muffler, 2in Offset Inlet 2in Center Outlet, Non-Reversible, Moderate Sound (Part No.942051)
from
$173.99
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 aluminized steel and fully MIG welded for maximum durability.
See More
Walker – SoundFX Universal Universal Exhaust Muffler 2.25" Inlet (ID) 2.25" Outlet (ID) (Part No.18113)
from
$52.99
Walker SoundFX universal mufflers are engineered with 100% aluminized steel for longer service life compared to low-carbon steel. Featuring mechanical interior joints for durability and spun-locked heads for stability, SoundFX mufflers deliver quality appearance and favorable acoustics.
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) 2.5" Outlet (ID) (Part No.21856)
from
$101.99
Designed to deliver superior flow and OE-style sound, Walker Quiet-Flow direct-fit mufflers feature OE-style hangers, brackets and pipe routings for easy installation. Available for top-selling domestic and foreign vehicles, Quiet-Flow mufflers have an internal drainage system to help reduce moisture collection.
Product Features:
See More
Product Features:
- 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
- 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 lifetime warranty and exclusive 90-Day Safe and Sound Guarantee. Visit Walkerexhaust.com for details.
Walker – SoundFX Universal Universal Exhaust Muffler 2.25" Inlet (ID) 2.25" Outlet (ID) (Part No.18141)
from
$60.99
Walker SoundFX universal mufflers are engineered with 100% aluminized steel for longer service life compared to low-carbon steel. Featuring mechanical interior joints for durability and spun-locked heads for stability, SoundFX mufflers deliver quality appearance and favorable acoustics.
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 1978 Cadillac Eldorado Exhaust Mufflers Categories
Most Popular Mufflers for 1978 Cadillac Eldorados
Enhance your 1978 Cadillac Eldorado with one of the 3 Mufflers we have in stock, starting at just $63.99.
Walker – Quiet-Flow Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2.5" Outlet (ID) (Part No.21856)
from
$101.99
Designed to deliver superior flow and OE-style sound, Walker Quiet-Flow direct-fit mufflers feature OE-style hangers, brackets and pipe routings for easy installation. Available for top-selling domestic and foreign vehicles, Quiet-Flow mufflers have an internal drainage system to help reduce moisture collection.
Product Features:
See More
Product Features:
- 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
- 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 lifetime warranty and exclusive 90-Day Safe and Sound Guarantee. Visit Walkerexhaust.com for details.
Walker – Sound Solution Exhaust Muffler (Part No.18649)
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 Universal Universal Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (ID) (Part No.18112)
from
$63.99
Walker SoundFX universal mufflers are engineered with 100% aluminized steel for longer service life compared to low-carbon steel. Featuring mechanical interior joints for durability and spun-locked heads for stability, SoundFX mufflers deliver quality appearance and favorable acoustics.
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
FAQs for 1978 Cadillac Eldorado Exhaust Mufflers
What are the best-selling Exhaust Mufflers for 1978 Cadillac Eldorados?
Out of 3 Exhaust Mufflers that fit 1978 Cadillac Eldorados, the following parts are the top sellers:
- SoundFX Universal Universal Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (ID) (11504417) – $63.99
What’s the price range for 1978 Cadillac Eldorado Exhaust Mufflers?
The prices of Exhaust Mufflers for the 1978 Cadillac Eldorado range from $63.99 up to $101.99 for the most premium parts.
What is the average price of an Exhaust Muffler for a 1978 Cadillac Eldorado?
The average price for Exhaust Mufflers for the 1978 Cadillac Eldorado is $76.99. 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 Cadillac Eldorado model years?
What are the cheapest Exhaust Mufflers for my 1978 Cadillac Eldorado?
The cheapest 1978 Cadillac Eldorado Exhaust Mufflers we carry are:
- SoundFX Universal Universal Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (ID) (11504417) – $63.99
- Sound Solution Exhaust Muffler (5290384) – $64.99
- Quiet-Flow Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2.5" Outlet (ID) (18290358) – $101.99
Does Advance Auto Parts sell Exhaust Mufflers for any other 1978 Cadillac models?
Yes. We stock Exhaust Mufflers for 1 other popular 1978 Cadillac models. Some of the most popular are 1978 DeVille Exhaust Mufflers and 1978 Fleetwood Exhaust Mufflers.
What are the top-rated Exhaust Mufflers that fit the 1978 Cadillac Eldorado?
The one 1978 Cadillac Eldorado Exhaust Muffler we have in stock is the SoundFX Universal Universal Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (ID). It costs $63.99.
What types of Exhaust Mufflers do you sell for my 1978 Cadillac Eldorado?
We currently have just 1 Exhaust Muffler in stock for a 1978 Cadillac Eldorado, and as of 6/2/26, it is a Muffler.
Can I get help with 1978 Cadillac Eldorado Exhaust Muffler orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Cadillac Exhaust Mufflers and more.
What is your return policy for Cadillac Eldorado Exhaust Mufflers?
Advance Auto Parts keeps returns simple. For new Cadillac Eldorado Exhaust Mufflers and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.