838+ 1978 Dodge Diplomat Engine & Drivetrain Parts - Page 40

Engine & Drivetrain (838 products)

Mahle Rings Case Checker 318 Eng 59-66 Chry 318 5.2L Eng 75-89 Chry Ind Engs Moly Ring Set

Mahle OE

Part # 40069CP.030

Fits All Trims

Mahle Rings Case Checker 318 Eng 59-66 Chry 318 5.2L Eng 75-89 Chry Ind Engs Moly Ring Set

$105.16

Wiseco

Part # K0011B3

Choose Trim

Wiseco Chrysler SB 340-360 +8CC 1.460 CH Piston Shelf Stock Kit

$1003.74

Cometic Chrysler 273/318/340 LA .060in Fiber Oil Pan Gasket Kit

Cometic Gasket

Part # C5627-060

Fits All Trims

Cometic Chrysler 273/318/340 LA .060in Fiber Oil Pan Gasket Kit

$41.92

Mahle Rings Case Checker 318 Eng 59-66 Chry 318 5.2L Eng 75-89 Chry Ind Engs Plain Ring Set

Mahle OE

Part # 50069CP.030

Fits All Trims

Mahle Rings Case Checker 318 Eng 59-66 Chry 318 5.2L Eng 75-89 Chry Ind Engs Plain Ring Set

$70.41

Yukon Gear High Performance Yukon Gear Ring & Pinion Gear Set For 10 & Down Chrysler 925in In A 488

Yukon Gear & Axle

Part # YG C9.25-488

Fits All Trims

Yukon Gear High Performance Yukon Gear Ring & Pinion Gear Set For 10 & Down Chrysler 925in In A 488

$565.89

Mahle Rings Case Chry 225 3.7L Eng 76-83 Chry Ind Engs DeSo 225 Eng 1960 Plain Ring Set

Mahle OE

Part # 50276CP.060

Fits All Trims

Mahle Rings Case Chry 225 3.7L Eng 76-83 Chry Ind Engs DeSo 225 Eng 1960 Plain Ring Set

$48.76

MAHLE Original Chrysler Cordoba 82-75 Carburetor Mounting

Victor Reinz

Part # G14140

Fits All Trims

MAHLE Original Chrysler Cordoba 82-75 Carburetor Mounting

$19.38

Mahle Rings Case Chry 225 3.7L Eng 76-83 Chry Ind Engs DeSo 225 Eng 1960 Moly Ring Set

Mahle OE

Part # 40276CP.020

Fits All Trims

Mahle Rings Case Chry 225 3.7L Eng 76-83 Chry Ind Engs DeSo 225 Eng 1960 Moly Ring Set

$40.33

Wiseco

Part # K0011B8

Choose Trim

Wiseco Chrysler SB 340-360 +8CC 1.460 CH Piston Shelf Stock Kit

$1003.74

MAHLE Original Chrysler Cordoba 82-75 Axle Housing Cover Gasket

Victor Reinz

Part # P29352

Fits All Trims

MAHLE Original Chrysler Cordoba 82-75 Axle Housing Cover Gasket

$10.85

Victor Reinz

Part # P18564

Fits All Trims

MAHLE Original Chrysler Cordoba 82-75 Axle Housing Cover Gasket

$7.03

MAHLE Original Chrysler Cordoba 82-75 Oil Filter Adapter Gasket

Victor Reinz

Part # B31604

Fits All Trims

MAHLE Original Chrysler Cordoba 82-75 Oil Filter Adapter Gasket

$16.68

Cometic Chrysler 318/340/360 LA V8 Top End Gasket Kit 4.100in Bore .40in MLS Cylinder Head Gasket

Cometic Gasket

Part # PRO1000T-4100-040

Fits All Trims

Cometic Chrysler 318/340/360 LA V8 Top End Gasket Kit 4.100in Bore .40in MLS Cylinder Head Gasket

$228.80

King Chrysler 273/277/301/303/313/318/326/340ci (Size STD) Performance Rod Bearing Set

King Engine Bearings

Part # CR805XPN

Fits All Trims

King Chrysler 273/277/301/303/313/318/326/340ci (Size STD) Performance Rod Bearing Set

$131.11

FTI 9.5in TF-8/727 Street Racer Series Converters Sprague Type - 3200 Stall

FTI Performance

Part # SRC00828

Fits All Trims

FTI 9.5in TF-8/727 Street Racer Series Converters Sprague Type - 3200 Stall

$891.07

King Chrysler 273/277/301/303/313/318/326/340ci (Size 001) Performance Rod Bearing Set

King Engine Bearings

Part # CR805XPN001

Fits All Trims

King Chrysler 273/277/301/303/313/318/326/340ci (Size 001) Performance Rod Bearing Set

$144.00

Clevite

Part # CB481P10(8)

Fits All Trims

Clevite Chry Prod V8 318-340-360 1956-95 Con Rod Bearing Set

$105.52

King Engine Bearings

Part # CR614AM040

Fits All Trims

King Engine Bearings Chrysler 170CI 2.8L/198CI 3.2L/225CI 3.7L Rod Bearings (Size 0.40 Oversized)

$59.99

Cometic Chrysler LA V8 .036in MLS Cylinder Head Gasket - 4.125in Bore

Cometic Gasket

Part # C5457-036

Fits All Trims

Cometic Chrysler LA V8 .036in MLS Cylinder Head Gasket - 4.125in Bore

$97.74

Cometic Chrysler LA V8 .188in Fiber Valve Cover Gasket

Cometic Gasket

Part # C5623-188

Fits All Trims

Cometic Chrysler LA V8 .188in Fiber Valve Cover Gasket

$38.53

Frequently Asked Questions

Do these parts fit my 1978 Dodge Diplomat?

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.

What engine & drivetrain options are available for my 1978 Dodge Diplomat?

We offer a wide selection of engine & drivetrain 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.

What brands make parts for the 1978 Dodge Diplomat?

We carry parts from trusted brands including COMP Cams, Cometic Gasket, Yukon Gear & Axle, Fel-Pro, and Clevite, plus many more. Filter by brand to find your preferred manufacturer.

How fast do 1978 Dodge Diplomat parts ship?

Most in-stock items ship within 1-2 business days. Shipping rates are calculated at checkout based on your location.

What warranty do your 1978 Dodge Diplomat parts come with?

Warranty coverage varies by manufacturer but typically ranges from 1 year to lifetime. Each product page includes specific warranty information from the manufacturer.

1978 Dodge Diplomat(1,717 parts)

1978 Dodge Diplomat(1,717 parts)

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Other Dodge Diplomat Years

Engine & Drivetrain (838 products)

Mahle Rings Case Checker 318 Eng 59-66 Chry 318 5.2L Eng 75-89 Chry Ind Engs Moly Ring Set

Wiseco Chrysler SB 340-360 +8CC 1.460 CH Piston Shelf Stock Kit

Cometic Chrysler 273/318/340 LA .060in Fiber Oil Pan Gasket Kit

Mahle Rings Case Checker 318 Eng 59-66 Chry 318 5.2L Eng 75-89 Chry Ind Engs Plain Ring Set

Yukon Gear High Performance Yukon Gear Ring & Pinion Gear Set For 10 & Down Chrysler 925in In A 488

Mahle Rings Case Chry 225 3.7L Eng 76-83 Chry Ind Engs DeSo 225 Eng 1960 Plain Ring Set

MAHLE Original Chrysler Cordoba 82-75 Carburetor Mounting

Mahle Rings Case Chry 225 3.7L Eng 76-83 Chry Ind Engs DeSo 225 Eng 1960 Moly Ring Set

Wiseco Chrysler SB 340-360 +8CC 1.460 CH Piston Shelf Stock Kit

MAHLE Original Chrysler Cordoba 82-75 Axle Housing Cover Gasket

MAHLE Original Chrysler Cordoba 82-75 Axle Housing Cover Gasket

MAHLE Original Chrysler Cordoba 82-75 Oil Filter Adapter Gasket

Cometic Chrysler 318/340/360 LA V8 Top End Gasket Kit 4.100in Bore .40in MLS Cylinder Head Gasket

King Chrysler 273/277/301/303/313/318/326/340ci (Size STD) Performance Rod Bearing Set

FTI 9.5in TF-8/727 Street Racer Series Converters Sprague Type - 3200 Stall

King Chrysler 273/277/301/303/313/318/326/340ci (Size 001) Performance Rod Bearing Set

Clevite Chry Prod V8 318-340-360 1956-95 Con Rod Bearing Set

King Engine Bearings Chrysler 170CI 2.8L/198CI 3.2L/225CI 3.7L Rod Bearings (Size 0.40 Oversized)

Cometic Chrysler LA V8 .036in MLS Cylinder Head Gasket - 4.125in Bore

Cometic Chrysler LA V8 .188in Fiber Valve Cover Gasket

Frequently Asked Questions

Do these parts fit my 1978 Dodge Diplomat?

What engine & drivetrain options are available for my 1978 Dodge Diplomat?

What brands make parts for the 1978 Dodge Diplomat?

How fast do 1978 Dodge Diplomat parts ship?

What warranty do your 1978 Dodge Diplomat parts come with?