Question 1

Do these parts fit my 1978 Dodge Diplomat S?

Accepted Answer

This page groups parts listed for the 1978 Dodge Diplomat S. 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.

Question 2

What timing components options are available for my 1978 Dodge Diplomat S?

Accepted Answer

We offer a wide selection of timing components parts for the 1978 Dodge Diplomat S. 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.

Question 3

What brands make parts for the 1978 Dodge Diplomat S?

Accepted Answer

We carry parts from trusted brands including INA, Cloyes, ATP, Dayco, and Dorman, plus many more. Filter by brand to find your preferred manufacturer.

Question 4

How fast do 1978 Dodge Diplomat S parts ship?

Accepted Answer

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

Question 5

What warranty do your 1978 Dodge Diplomat S parts come with?

Accepted Answer

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)

Shop by Problem

Other Dodge Diplomat Years

1978 Dodge Diplomat(1,717 parts)

Shop by Problem

Other Dodge Diplomat Years

S · Timing Components (12 products)

Engine Timing Chain

High Performance Timing Chain

High Performance Timing Chain

KIT TIMING CHAIN, DAYCO

ATP Engine Timing Cover

Engine Timing Cover

INA CDC Timing Chain Kit

INA CDC Timing Chain Kit

INA CDC Timing Chain

INA CDC Timing Chain

INA CDC Timing Chain Kit

INA CDC Timing Chain Kit

Frequently Asked Questions

Do these parts fit my 1978 Dodge Diplomat S?

What timing components options are available for my 1978 Dodge Diplomat S?

What brands make parts for the 1978 Dodge Diplomat S?

How fast do 1978 Dodge Diplomat S parts ship?

What warranty do your 1978 Dodge Diplomat S parts come with?