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Choose your trim in My Garage to confirm exact fit.
Exact-fit parts for the 1978 Dodge Diplomat Medallion.
Spectra Premium
Part # SP1004MP
$37.15
Dorman
Part # 96034
$19.36
Edelbrock
Part # 1720
$241.93
Spectra Premium
Part # CR1A
$134.09
Standard Motor Products
Part # FV-7
$81.04
GMB
Part # 520-8010
$45.00
Standard Motor Products
Part # S-582
$11.12
Spectra Premium
Part # SP1122MP
$37.06
GMB
Part # 520-8240
$43.69
US Motor Works
Part # USEP8004
$57.46
Carter
Part # M60514
$29.71
Motorad
Part # 12404S
$22.04
Standard Motor Products
Part # HP3890
$9.22
Delphi
Part # PN8024
$31.57
Delphi
Part # MF0124
$37.11
Delphi
Part # MF0048
$31.71
Spectra Premium
Part # ST02
$34.27
Dorman
Part # 578-002
$36.79
All 18 products shown
This page groups parts listed for the 1978 Dodge Diplomat Medallion. Some products fit every trim, while others depend on submodel, engine, drivetrain, or brake package. Use your trim in My Garage or the product page fitment check to confirm exact fit.
We offer a wide selection of fuel injectors & pumps parts for the 1978 Dodge Diplomat Medallion. This page narrows the catalog to the year, make, and model; use your trim on product pages to confirm exact fit when a part only fits certain submodels.
We carry parts from trusted brands including Spectra Premium, Delphi, Standard Motor Products, Dorman, and GMB, plus many more. Filter by brand to find your preferred manufacturer.
Most in-stock items ship within 1-2 business days. Shipping rates are calculated at checkout based on your location.
Warranty coverage varies by manufacturer but typically ranges from 1 year to lifetime. Each product page includes specific warranty information from the manufacturer.
