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ACDelco 18K21 Drum Brake Self Adjuster Repair Kit
for 1978 (please select make/model)

ACDelco 18K21 Drum Brake Self Adjuster Repair Kit - 1978

ACDelco
Brand:ACDelco
Part Number: 18K21
UPC: 00036666741070
Weight: 0.4 lbs
Condition:New



Availability:
0 in Stock
 OUT OF STOCK

Product Information

Description:

Get the ACDelco 18K21 Drum Brake Self Adjuster Repair Kit for your 1978. Buy now and secure your purchase online!

The ACDelco Professional Drum Brake Self Adjuster Kit contains high quality replacement components for your vehicle's braking system. This kit includes the necessary bolts, fasteners, bushings, and other hardware needed to repair your vehicle's drum brake applications. ⚠ WARNING: Cancer and Reproductive Harm - https://www.P65Warnings.ca.gov

Features and Benefits:

  • Includes necessary hardware for easy installation
  • Performs to standards required by OE manufacturers ensuring optimal protection, service life, and safety
  • Thoroughly manufactured to meet your expectations for fit, form, and function

Specifications:

Colored Springs:
No
End 1 Type:
Forked
End 2 Type:
Forked
Height (in):
1.8 in
Length (in):
7.3 in
Package Includes:
Adjuster, Lever, Cable Guide, Washer, and Cap
Programming Required:
No
Universal Or Specific Fit:
Specific
Weight (lb):
0.4 lb
Width (in):
3.3 in

Features and Benefits:

  • – Calipers and wheel cylinders should be checked every brake inspection and serviced or replaced as required.
  • – Check brake fluid level at every oil change. Replace fluid according to owner's manual recommendations.
  • – Check the thickness of your brake pads.
  • – Inspect the brake lines for rust, punctures, or visible leaks (You may be able to do this, but consult a qualified technician if necessary).
  • – Inspection of brake lining and pads for wear or contamination by brake fluid or grease.
  • – Inspection of the brake hoses for brittleness or cracking.
  • – Inspection of wheel bearings and grease seals.
  • – Parking brake adjustments (as needed).
  • The following inspections and maintenance procedures can help prevent potential brake problems:
  • The following should be conducted by a qualified technician:

Specifications:

Country of Origin:
US

Select a vehicle to narrow ACDelco 18K21 Drum Brake Self Adjuster Repair Kit fitment info!

Last Updated: 03/09/2024

Years Vehicle Per Vehicle Position Fit NotesFitment Notes
Ford Bronco

5.8L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
 

Ford Bronco



5.8L V8 Gas OHV

Rear Right (Passenger) Gold

1 Per Vehicle

1979

 

1978

 

1979

 

1978

 
Ford Bronco

6.6L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
 

Ford Bronco



6.6L V8 Gas OHV

Rear Right (Passenger) Gold

1 Per Vehicle

1983

 

1982

 

1981

 

1980

 

1979

 

1978

 

1977

 

1976

 

1975

 

1983

 

1982

 

1981

 

1980

 

1979

 

1978

 

1977

 

1976

 

1975

 
Ford E-100 Econoline

4.9L L6 Gas OHV,
5.8L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
 

Ford E-100 Econoline



4.9L L6 Gas OHV,
5.8L V8 Gas OHV

Rear Right (Passenger) Gold

1 Per Vehicle

1978

 

1978

 
Ford E-100 Econoline

7.5L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
 

Ford E-100 Econoline



7.5L V8 Gas OHV

Rear Right (Passenger) Gold

1 Per Vehicle

1983

 

1982

 

1981

 

1980

 

1979

 

1978

 

1977

 

1976

 

1975

 

1983

 

1982

 

1981

 

1980

 

1979

 

1978

 

1977

 

1976

 

1975

 
Ford E-100 Econoline Club Wagon

4.9L L6 Gas OHV,
5.8L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
 

Ford E-100 Econoline Club Wagon



4.9L L6 Gas OHV,
5.8L V8 Gas OHV

Rear Right (Passenger) Gold

1 Per Vehicle
Ford E-150 Econoline

4.9L L6 Gas OHV,
5.8L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
 

Ford E-150 Econoline



4.9L L6 Gas OHV,
5.8L V8 Gas OHV

Rear Right (Passenger) Gold

1 Per Vehicle
Ford E-150 Econoline Club Wagon

4.9L L6 Gas OHV,
5.8L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
 

Ford E-150 Econoline Club Wagon



4.9L L6 Gas OHV,
5.8L V8 Gas OHV

Rear Right (Passenger) Gold

1 Per Vehicle

1979

 

1978

 

1977

 

1979

 

1978

 

1977

 
Ford F-100

5.8L V8 Gas OHV,
6.6L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
 

Ford F-100



5.8L V8 Gas OHV,
6.6L V8 Gas OHV

Rear Right (Passenger) Gold

1 Per Vehicle
Ford F-100

5.0L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
 

Ford F-100



5.0L V8 Gas OHV

Rear Right (Passenger) Gold

1 Per Vehicle
Ford F-100

4.9L L6 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
 

Ford F-100



4.9L L6 Gas OHV

Rear Right (Passenger) Gold

1 Per Vehicle

1979

 

1978

 

1977

 

1979

 

1978

 

1977

 
Ford F-150

5.8L V8 Gas OHV,
6.6L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
 

Ford F-150



5.8L V8 Gas OHV,
6.6L V8 Gas OHV

Rear Right (Passenger) Gold

1 Per Vehicle

1979

 

1978

 

1977

 

1976

 

1975

 

1979

 

1978

 

1977

 

1976

 

1975

 
Ford F-150

4.9L L6 Gas OHV,
5.0L V8 Gas OHV,
7.5L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
 

Ford F-150



4.9L L6 Gas OHV,
5.0L V8 Gas OHV,
7.5L V8 Gas OHV

Rear Right (Passenger) Gold

1 Per Vehicle

1978

 

1977

 

1978

 

1977

 
Ford LTD

5.0L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
 

Ford LTD



5.0L V8 Gas OHV

Rear Right (Passenger) Gold

1 Per Vehicle

1978

 

1977

 

1976

 

1975

 

1974

 

1973

 

1972

 

1978

 

1977

 

1976

 

1975

 

1974

 

1973

 

1972

 
Ford LTD

7.5L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
 

Ford LTD



7.5L V8 Gas OHV

Rear Right (Passenger) Gold

1 Per Vehicle

1978

 

1977

 

1976

 

1975

 

1974

 

1973

 

1972

 

1971

 

1978

 

1977

 

1976

 

1975

 

1974

 

1973

 

1972

 

1971

 
Ford LTD

6.6L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
 

Ford LTD



6.6L V8 Gas OHV

Rear Right (Passenger) Gold

1 Per Vehicle

1978

 

1977

 

1976

 

1975

 

1974

 

1973

 

1972

 

1971

 

1970

 

1969

 

1978

 

1977

 

1976

 

1975

 

1974

 

1973

 

1972

 

1971

 

1970

 

1969

 
Ford LTD

5.8L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
 

Ford LTD



5.8L V8 Gas OHV

Rear Right (Passenger) Gold

1 Per Vehicle

1979

 

1978

 

1977

 

1979

 

1978

 

1977

 
Ford LTD II

5.0L V8 Gas OHV,
5.8L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
2.25 Brake Shoe
 

Ford LTD II



5.0L V8 Gas OHV,
5.8L V8 Gas OHV

Rear Right (Passenger) Gold
2.25 Brake Shoe

1 Per Vehicle

1979

 

1978

 

1977

 

1979

 

1978

 

1977

 
Ford LTD II

5.0L V8 Gas OHV,
5.8L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
w/ 2 1/2 Wide Shoes
 

Ford LTD II



5.0L V8 Gas OHV,
5.8L V8 Gas OHV

Rear Right (Passenger) Gold
w/ 2 1/2 Wide Shoes

1 Per Vehicle

1979

 

1978

 

1977

 

1979

 

1978

 

1977

 
Ford LTD II

5.0L V8 Gas OHV,
5.8L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
with 11 IN Brakes
 

Ford LTD II



5.0L V8 Gas OHV,
5.8L V8 Gas OHV

Rear Right (Passenger) Gold
with 11 IN Brakes

1 Per Vehicle

1978

 

1977

 

1978

 

1977

 
Ford LTD II

6.6L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
2.25 Brake Shoe
 

Ford LTD II



6.6L V8 Gas OHV

Rear Right (Passenger) Gold
2.25 Brake Shoe

1 Per Vehicle

1978

 

1977

 

1978

 

1977

 
Ford LTD II

6.6L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
w/ 2 1/2 Wide Shoes
 

Ford LTD II



6.6L V8 Gas OHV

Rear Right (Passenger) Gold
w/ 2 1/2 Wide Shoes

1 Per Vehicle

1978

 

1977

 

1978

 

1977

 
Ford LTD II

6.6L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
with 11 IN Brakes
 

Ford LTD II



6.6L V8 Gas OHV

Rear Right (Passenger) Gold
with 11 IN Brakes

1 Per Vehicle

1979

 

1978

 

1977

 

1979

 

1978

 

1977

 
Ford Ranchero

5.0L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
w/ 11.03 X 2.25 Brakes
 

Ford Ranchero



5.0L V8 Gas OHV

Rear Right (Passenger) Gold
w/ 11.03 X 2.25 Brakes

1 Per Vehicle

1979

 

1978

 

1977

 

1979

 

1978

 

1977

 
Ford Ranchero

5.0L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
with 11 IN Brakes
 

Ford Ranchero



5.0L V8 Gas OHV

Rear Right (Passenger) Gold
with 11 IN Brakes

1 Per Vehicle

1979

 

1978

 

1977

 

1976

 

1975

 

1974

 

1973

 

1979

 

1978

 

1977

 

1976

 

1975

 

1974

 

1973

 
Ford Ranchero

5.8L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
w/ 11.03 X 2.25 Brakes
 

Ford Ranchero



5.8L V8 Gas OHV

Rear Right (Passenger) Gold
w/ 11.03 X 2.25 Brakes

1 Per Vehicle

1979

 

1978

 

1977

 

1976

 

1975

 

1974

 

1973

 

1979

 

1978

 

1977

 

1976

 

1975

 

1974

 

1973

 
Ford Ranchero

5.8L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
with 11 IN Brakes
 

Ford Ranchero



5.8L V8 Gas OHV

Rear Right (Passenger) Gold
with 11 IN Brakes

1 Per Vehicle

1978

 

1977

 

1976

 

1975

 

1974

 

1973

 

1978

 

1977

 

1976

 

1975

 

1974

 

1973

 
Ford Ranchero

6.6L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
w/ 11.03 X 2.25 Brakes
 

Ford Ranchero



6.6L V8 Gas OHV

Rear Right (Passenger) Gold
w/ 11.03 X 2.25 Brakes

1 Per Vehicle

1978

 

1977

 

1976

 

1975

 

1974

 

1973

 

1978

 

1977

 

1976

 

1975

 

1974

 

1973

 
Ford Ranchero

6.6L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
with 11 IN Brakes
 

Ford Ranchero



6.6L V8 Gas OHV

Rear Right (Passenger) Gold
with 11 IN Brakes

1 Per Vehicle

1979

 

1978

 

1977

 

1979

 

1978

 

1977

 
Ford Thunderbird

5.0L V8 Gas OHV,
5.8L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
 

Ford Thunderbird



5.0L V8 Gas OHV,
5.8L V8 Gas OHV

Rear Right (Passenger) Gold

1 Per Vehicle

1978

 

1977

 

1978

 

1977

 
Ford Thunderbird

6.6L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
 

Ford Thunderbird



6.6L V8 Gas OHV

Rear Right (Passenger) Gold

1 Per Vehicle

1980

 

1979

 

1978

 

1977

 

1976

 

1975

 

1974

 

1980

 

1979

 

1978

 

1977

 

1976

 

1975

 

1974

 
International Scout II

3.2L L4 Gas OHV,
5.0L V8 Gas OHV,
5.6L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
 

International Scout II



3.2L L4 Gas OHV,
5.0L V8 Gas OHV,
5.6L V8 Gas OHV

Rear Right (Passenger) Gold

1 Per Vehicle

1979

 

1978

 

1977

 

1976

 

1979

 

1978

 

1977

 

1976

 
International Scout II

3.2L L6 Diesel OHV
1
 
Rear Right (Passenger)
 
Gold
 

International Scout II



3.2L L6 Diesel OHV

Rear Right (Passenger) Gold

1 Per Vehicle

1979

 

1978

 

1977

 

1979

 

1978

 

1977

 
Lincoln Continental

6.6L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
 

Lincoln Continental



6.6L V8 Gas OHV

Rear Right (Passenger) Gold

1 Per Vehicle

1978

 

1977

 

1976

 

1975

 

1974

 

1973

 

1972

 

1971

 

1970

 

1978

 

1977

 

1976

 

1975

 

1974

 

1973

 

1972

 

1971

 

1970

 
Lincoln Continental

7.5L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
 

Lincoln Continental



7.5L V8 Gas OHV

Rear Right (Passenger) Gold

1 Per Vehicle

1979

 

1978

 

1977

 

1979

 

1978

 

1977

 
Mercury Cougar

5.0L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
 

Mercury Cougar



5.0L V8 Gas OHV

Rear Right (Passenger) Gold

1 Per Vehicle

1979

 

1978

 

1977

 

1976

 

1979

 

1978

 

1977

 

1976

 
Mercury Cougar

5.8L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
 

Mercury Cougar



5.8L V8 Gas OHV

Rear Right (Passenger) Gold

1 Per Vehicle

1978

 

1977

 

1976

 

1978

 

1977

 

1976

 
Mercury Cougar

6.6L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
 

Mercury Cougar



6.6L V8 Gas OHV

Rear Right (Passenger) Gold

1 Per Vehicle

1978

 

1978

 
Mercury Grand Marquis

5.8L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
w/ 11.03 x 2.5 Brakes
2.5 Brake Shoe
 

Mercury Grand Marquis



5.8L V8 Gas OHV

Rear Right (Passenger) Gold
w/ 11.03 x 2.5 Brakes
2.5 Brake Shoe

1 Per Vehicle

1978

 

1978

 
Mercury Grand Marquis

5.8L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
with 10 IN x 2-1/4 IN Brakes
w/ 11.03 X 2.25 Brakes
 

Mercury Grand Marquis



5.8L V8 Gas OHV

Rear Right (Passenger) Gold
with 10 IN x 2-1/4 IN Brakes
w/ 11.03 X 2.25 Brakes

1 Per Vehicle

1978

 

1977

 

1976

 

1975

 

1978

 

1977

 

1976

 

1975

 
Mercury Grand Marquis

6.6L V8 Gas OHV,
7.5L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
w/ 11.03 x 2.5 Brakes
2.5 Brake Shoe
 

Mercury Grand Marquis



6.6L V8 Gas OHV,
7.5L V8 Gas OHV

Rear Right (Passenger) Gold
w/ 11.03 x 2.5 Brakes
2.5 Brake Shoe

1 Per Vehicle

1978

 

1977

 

1976

 

1975

 

1978

 

1977

 

1976

 

1975

 
Mercury Grand Marquis

6.6L V8 Gas OHV,
7.5L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
with 10 IN x 2-1/4 IN Brakes
w/ 11.03 X 2.25 Brakes
 

Mercury Grand Marquis



6.6L V8 Gas OHV,
7.5L V8 Gas OHV

Rear Right (Passenger) Gold
with 10 IN x 2-1/4 IN Brakes
w/ 11.03 X 2.25 Brakes

1 Per Vehicle

1978

 

1978

 
Mercury Marquis

5.8L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
w/ 11.03 x 2.5 Brakes
2.5 Brake Shoe
 

Mercury Marquis



5.8L V8 Gas OHV

Rear Right (Passenger) Gold
w/ 11.03 x 2.5 Brakes
2.5 Brake Shoe

1 Per Vehicle

1978

 

1978

 
Mercury Marquis

5.8L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
with 10 IN x 2-1/4 IN Brakes
w/ 11.03 X 2.25 Brakes
 

Mercury Marquis



5.8L V8 Gas OHV

Rear Right (Passenger) Gold
with 10 IN x 2-1/4 IN Brakes
w/ 11.03 X 2.25 Brakes

1 Per Vehicle

1978

 

1978

 
Mercury Marquis

5.8L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
with 11 IN Brakes
 

Mercury Marquis



5.8L V8 Gas OHV

Rear Right (Passenger) Gold
with 11 IN Brakes

1 Per Vehicle

1978

 

1977

 

1976

 

1975

 

1974

 

1973

 

1978

 

1977

 

1976

 

1975

 

1974

 

1973

 
Mercury Marquis

6.6L V8 Gas OHV,
7.5L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
w/ 11.03 x 2.5 Brakes
2.5 Brake Shoe
 

Mercury Marquis



6.6L V8 Gas OHV,
7.5L V8 Gas OHV

Rear Right (Passenger) Gold
w/ 11.03 x 2.5 Brakes
2.5 Brake Shoe

1 Per Vehicle

1978

 

1977

 

1976

 

1975

 

1974

 

1973

 

1978

 

1977

 

1976

 

1975

 

1974

 

1973

 
Mercury Marquis

6.6L V8 Gas OHV,
7.5L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
with 10 IN x 2-1/4 IN Brakes
w/ 11.03 X 2.25 Brakes
 

Mercury Marquis



6.6L V8 Gas OHV,
7.5L V8 Gas OHV

Rear Right (Passenger) Gold
with 10 IN x 2-1/4 IN Brakes
w/ 11.03 X 2.25 Brakes

1 Per Vehicle

1978

 

1977

 

1976

 

1975

 

1974

 

1973

 

1978

 

1977

 

1976

 

1975

 

1974

 

1973

 
Mercury Marquis

6.6L V8 Gas OHV,
7.5L V8 Gas OHV
1
 
Rear Right (Passenger)
 
Gold
with 11 IN Brakes
 

Mercury Marquis



6.6L V8 Gas OHV,
7.5L V8 Gas OHV

Rear Right (Passenger) Gold
with 11 IN Brakes

1 Per Vehicle

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