1978 Dodge Diplomat Exhaust Upgrade Parts
17 parts listed for your 1978 Dodge Diplomat for a complete exhaust upgrade. Choose your trim on product pages to confirm exact fit. A moderate DIY project - estimated 2-5 hours.
Headers
(5)primary
Fel-Pro
Part # 901042
Fel-Pro Dodge D150 90104-2 Engine Intake to Exhaust Gasket
$6.03
Fel-Pro
Part # MS90460
Fel-Pro Dodge D150 MS 90460 Exhaust Manifold Gasket Set
$14.09
Fel-Pro
Part # MS9610B1
Fel-Pro Dodge D150 MS 9610 B-1 Intake and Exhaust Manifolds Combination Gasket
$14.52
Victor Reinz
Part # 95095SG
MAHLE Original Chry 273 Performance Exhaust Manifold
$80.26
Victor Reinz
Part # MS12268
MAHLE Original Chrysler Cordoba 83 Exhaust Manifold Set
$24.40
Mufflers
(12)primary
Cometic Gasket
Part # C5157
Cometic Chrysler LA V8 .043in Copper Exhaust Manifold Gasket Set
$53.34
Cometic Gasket
Part # C5628-064
Cometic Chrysler LA V8 .064in ArmorCore Exhaust Manifold Gasket Set - With 4 BBL Carburetor
$32.31
Cometic Gasket
Part # C5571-064
Cometic Chrysler R3 Block V8 .064in ArmorCore Exhaust Manifold Gasket Set - With W2 Heads
$30.99
Cometic Gasket
Part # C5593-064
Cometic Chrysler W7/W8/W9 Head V8 .064in ArmorCore Exhaust Manifold Gasket Set
$32.31
Cometic Gasket
Part # C5901-030
Cometic Chrysler/Dodge 318/340/360 V8 .030in 1.310in x 1.640in Port MLS Header Gaskets (Pair)
$54.48
Fel-Pro
Part # 9547
Fel-Pro Dodge D150 9547 Exhaust Pipe Flange Gasket
$6.12
Magnaflow
Part # 94005
MagnaFlow Conv Univ 2.25 FED
$129.00
Magnaflow
Part # 3322305
MagnaFlow Conv Univ 2.25inch C/C PC1
$610.00
Exhaust Upgrade for Other Dodge Diplomat Years
Other Jobs for Your 1978 Dodge Diplomat
Frequently Asked Questions
What parts do I need for a exhaust upgrade on my 1978 Dodge Diplomat?
A complete exhaust upgrade on the 1978 Dodge Diplomat typically requires headers, mufflers. This page groups parts commonly associated with that year, make, and model; confirm your trim on product pages for exact fit.
How long does a exhaust upgrade take on a 1978 Dodge Diplomat?
A exhaust upgrade typically takes 2-5 hours and is rated as moderate difficulty. Actual time may vary depending on your experience and the specific parts being replaced.
Can I do a exhaust upgrade myself?
A exhaust upgrade is a moderate DIY project. If you have some mechanical experience and the right tools, you can handle it. Otherwise, consider having a professional do the work.
Are these parts guaranteed to fit my 1978 Dodge Diplomat?
These parts are listed for the 1978 Dodge Diplomat using manufacturer fitment data. Some products fit every trim, while others require trim confirmation. Use your trim in My Garage or the product page fitment checker to confirm exact fit.
What brands make exhaust upgrade parts for the 1978 Dodge Diplomat?
We carry exhaust upgrade parts from trusted brands including Fel-Pro, Victor Reinz, Cometic Gasket, and Magnaflow. Filter by brand to find your preferred manufacturer.
How much does a exhaust upgrade cost for a 1978 Dodge Diplomat?
The cost of a exhaust upgrade for the 1978 Dodge Diplomat depends on the parts and brands you choose. Browse the parts on this page to see current pricing. Doing the work yourself saves significantly on labor costs.