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Choose your trim in My Garage to confirm exact fit.
Energy Suspension
Part # 5.5109R
$49.05
Prothane
Part # 4-504-BL
$47.97
Prothane
Part # 4-1114
$44.33
Energy Suspension
Part # 5.3114G
$52.36
COMP Cams
Part # 995-16
$164.71
Energy Suspension
Part # 5.1106R
$57.44
Energy Suspension
Part # 5.5109G
$49.05
Energy Suspension
Part # 5.5111R
$49.05
COMP Cams
Part # 747-12
$70.31
Yukon Gear & Axle
Part # SK 31402
$20.89
Energy Suspension
Part # 5.5111G
$49.05
Prothane
Part # 4-1115-BL
$47.67
Yukon Gear & Axle
Part # YSPCS-010
$9.89
Edelbrock
Part # 9720
$104.74
Prothane
Part # 4-1603
$58.53
Yukon Gear & Axle
Part # YSPXP-005
$54.89
COMP Cams
Part # 744-100
$489.13
COMP Cams
Part # 747-100
$461.94
Prothane
Part # 4-1115
$47.67
Yukon Gear & Axle
Part # YSPXP-004
$84.89
This page groups parts listed for the 1978 Dodge Diplomat. 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 suspension & steering parts for the 1978 Dodge Diplomat. 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 COMP Cams, Prothane, Energy Suspension, Moog, and Yukon Gear & Axle, 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.
