Enter Vehicle Year Make Model

Specify your vehicle's year, make and model to guarantee fit.

Year
Make
Model
Options
Drivetrain

1978 Mercury Cougar Parts

What year is your
Free Same Day Shipping

1978 Mercury Cougar

Filter Results
  • Notify When Available

    VIDEO

    Kit image

    Replaces 1978 Mercury Cougar 4 Piece Headlight Set TRQ LKA93536

    14 reviews
    Brand: TRQ - LKA93536

    • Kit Includes: (2) High Beam Sealed Headlights
    • Lighting Housing Shape: Rectangular
    • Kit Includes: (2) Low Beam Sealed Headlights
    • Quantity: 4 Piece
    $82.95
    Save 14%
    List $95.95 Save $13.00

    Guaranteed to Fit 1978 Mercury Cougar

    Guaranteed to Fit 1978 Mercury Cougar

  • Notify When Available

    VIDEO

    High and Low Tone Horn Pair

    Replaces 1978 Mercury Cougar High and Low Tone Horn Pair TRQ ELA17620

    27 reviews
    Brand: TRQ - ELA17620

    • Kit Includes: (1) Low Tone High Output Horn
    • Kit Includes: (1) High Tone High Output Horn
    $56.95
    Save 22%
    List $72.95 Save $16.00

    Guaranteed to Fit 1978 Mercury Cougar

    Guaranteed to Fit 1978 Mercury Cougar

  • Notify When Available

    VIDEO

    High Tone High Outupt Horn

    Replaces 1978 Mercury Cougar High Tone High Output Horn TRQ ELA05003

    5 reviews
    Brand: TRQ - ELA05003
    $34.95
    Save 8%
    List $37.95 Save $3.00

    Guaranteed to Fit 1978 Mercury Cougar

    Guaranteed to Fit 1978 Mercury Cougar

  • Notify When Available
    Ignition Control Module

    Replaces Ignition Control Module TRQ ICA61375

    10 reviews
    Brand: TRQ - ICA61375
    $38.95
    Save 24%
    List $50.95 Save $12.00

    Guaranteed to Fit 1978 Mercury Cougar

    Guaranteed to Fit 1978 Mercury Cougar

  • Notify When Available
    Headlight Dimmer Switch

    Replaces 1978 Mercury Cougar Floor Mounted Headlight Dimmer Switch TRQ SWA41734

    6 reviews
    Brand: TRQ - SWA41734
    $18.95
    Save 35%
    List $28.95 Save $10.00

    Guaranteed to Fit 1978 Mercury Cougar

    Guaranteed to Fit 1978 Mercury Cougar

  • Notify When Available
    1965-91 Ford Power Window Regulator Gear 45 Spline 9 Tooth

    Replaces 1978 Mercury Cougar Window Regulator Gear Repair Kit TRQ WCA50125

    5 reviews
    Brand: TRQ - WCA50125

    $29.95
    Save 9%
    List $32.95 Save $3.00

    Guaranteed to Fit 1978 Mercury Cougar

    Guaranteed to Fit 1978 Mercury Cougar

  • Notify When Available

    VIDEO

    69-72 AMC; 60-04 Dodge, Ply; 53-13 Ford, Linc, Merc; 54-74 Internl; 68-73 Jeep Rear Whl Brk Cyl Pair

    Replaces 1978 Mercury Cougar with 1 in. Cylinder Bore Rear Driver & Passenger Side 2 Piece Wheel Cylinder Set DIY Solutions BFS00027

    3 reviews
    Brand: DIY Solutions - BFS00027

    • Quantity: 2 Piece
    • Kit Includes: (1) Rear Driver Side Wheel Cylinder
    • Kit Includes: (1) Rear Passenger Side Wheel Cylinder
    $46.95
    Save 24%
    List $61.95 Save $15.00

    Guaranteed to Fit 1978 Mercury Cougar

    Guaranteed to Fit 1978 Mercury Cougar

  • Notify When Available
    Ignition Lock Cylinder

    Replaces 1978 Mercury Cougar Ignition Lock Cylinder TRQ ILA41526

    Brand: TRQ - ILA41526

    $25.95
    Save 26%
    List $34.95 Save $9.00

    Guaranteed to Fit 1978 Mercury Cougar

    Guaranteed to Fit 1978 Mercury Cougar

  • Notify When Available

    VIDEO

    Kit image

    Replaces 1978 Mercury Cougar High Beam 2 Piece Headlight Set TRQ HLA93537

    Brand: TRQ - HLA93537

    • Quantity: 2 Piece
    • Lighting Housing Shape: Rectangular
    • Kit Includes: (1) Passenger Side Headlight
    • Kit Includes: (1) Driver Side Headlight
    $49.95
    Save 19%
    List $61.95 Save $12.00

    Guaranteed to Fit 1978 Mercury Cougar

    Guaranteed to Fit 1978 Mercury Cougar

  • Notify When Available
    Door Lock Cylinder Set

    Replaces 1978 Mercury Cougar 2 Piece Door Lock Cylinder Set TRQ BDA12571

    Brand: TRQ - BDA12571

    • Quantity: 2 Piece
    • Kit Includes: (2) Door Lock Cylinders
    $29.95
    Save 14%
    List $34.95 Save $5.00

    Guaranteed to Fit 1978 Mercury Cougar

    Guaranteed to Fit 1978 Mercury Cougar

1

...

1 2 3 4 5

...

36
Close



Mercury is a registered trademark of Ford Motor Company. 1A Auto is not affiliated with or sponsored by Mercury or Ford Motor Company. See all trademarks.
Same Day Shipping

Need your part faster? Choose expedited shipping at checkout.

Guaranteed To Fit

Highest quality, direct fit replacement auto parts enforced to the strictest product standards.

USA Customer Support

Exceeding customers' expectations, our team of passionate auto enthusiasts are here to help.

Instructional Video Library

Thousands of how-to auto repair videos to guide you step-by-step through your repair.

Go To Top
Specify your vehicle

Specify your vehicle's year, make and model to guarantee fit.

Year
Make
Model
Options
Drivetrain

If your vehicle isn't listed, close the window to return to search.