Enter Vehicle Year Make Model

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

Year
Make
Model
Options
Drivetrain

1994 Peterbilt 378 Parts

What year is your
Free Same Day Shipping

1994 Peterbilt 378

Filter Results
  • Notify When Available
    Kit image

    Replaces 1994 Peterbilt 378 Driver & Passenger Side 2 Piece Mirror Set TRQ MRA38850

    Brand: TRQ - MRA38850

    • Quantity: 2 Piece
    • Kit Includes: (1) Passenger Side Mirror
    • Kit Includes: (1) Driver Side Mirror
    • Adjustment Type: Manual
    $84.95
    Save 29%
    List $119.95 Save $35.00

    Guaranteed to Fit 1994 Peterbilt 378

    Guaranteed to Fit 1994 Peterbilt 378

    Replaces 1994 Peterbilt 378 Driver & Passenger Side 2 Piece Mirror Set TRQ MRA38850

    Kit image
    Brand: TRQ - MRA38850

    • Quantity: 2 Piece
    • Kit Includes: (1) Passenger Side Mirror
    • Kit Includes: (1) Driver Side Mirror
    • Adjustment Type: Manual
    $84.95
    Save 29%
    List $119.95 Save $35.00

    Guaranteed to Fit 1994 Peterbilt 378

    Guaranteed to Fit 1994 Peterbilt 378

  • Notify When Available
    Mirror Pair

    Replaces 1994 Peterbilt 378 Driver & Passenger Side 2 Piece Without Memory Paint to Match Center Stud Mirror Set TRQ MRA08821

    Brand: TRQ - MRA08821

    • Mirror Mount Type: Center Stud
    • Includes: Mounting Bracket
    • Design: Round
    • Mirror Color / Finish: Paint to Match
    • Quantity: 2 Piece
    • Adjustment Type: Manual
    • Mirror Memory Type: Without Memory
    • Kit Includes: (1) Passenger Side Mirror
    • Kit Includes: (1) Driver Side Mirror
    $42.95
    Save 26%
    List $57.95 Save $15.00

    Guaranteed to Fit 1994 Peterbilt 378

    Guaranteed to Fit 1994 Peterbilt 378

    Replaces 1994 Peterbilt 378 Driver & Passenger Side 2 Piece Without Memory Paint to Match Center Stud Mirror Set TRQ MRA08821

    Mirror Pair
    Brand: TRQ - MRA08821

    • Mirror Mount Type: Center Stud
    • Includes: Mounting Bracket
    • Design: Round
    • Mirror Color / Finish: Paint to Match
    • Quantity: 2 Piece
    • Adjustment Type: Manual
    • Mirror Memory Type: Without Memory
    • Kit Includes: (1) Passenger Side Mirror
    • Kit Includes: (1) Driver Side Mirror
    $42.95
    Save 26%
    List $57.95 Save $15.00

    Guaranteed to Fit 1994 Peterbilt 378

    Guaranteed to Fit 1994 Peterbilt 378

  • Notify When Available
    86-94 Peterbilt 357, 359, 362, 375, 377, 378, 379 Parallel Flow Heavy Duty AC Condenser

    Replaces 1994 Peterbilt 378 A/C Condenser TRQ ACA84558

    Brand: TRQ - ACA84558

    $74.17
    Save 49%
    List $144.95 Save $70.78

    Guaranteed to Fit 1994 Peterbilt 378

    Guaranteed to Fit 1994 Peterbilt 378

    Replaces 1994 Peterbilt 378 A/C Condenser TRQ ACA84558

    86-94 Peterbilt 357, 359, 362, 375, 377, 378, 379 Parallel Flow Heavy Duty AC Condenser
    Brand: TRQ - ACA84558

    $74.17
    Save 49%
    List $144.95 Save $70.78

    Guaranteed to Fit 1994 Peterbilt 378

    Guaranteed to Fit 1994 Peterbilt 378

  • Notify When Available
    Mirror

    Replaces Mirror TRQ MRA08654

    Brand: TRQ - MRA08654

    • Includes: Mounting Bracket
    • Design: Round
    • Heated: Yes
    • Housing Turn Signal Indicator: No
    • Mirror Turn Signal Indicator: No
    • Adjustment Type: Manual
    • Cover Finish: Smooth
    • Cover Color: Stainless Steel
    • Housing Color: Stainless Steel
    $44.95
    Save 24%
    List $58.95 Save $14.00

    Guaranteed to Fit 1994 Peterbilt 378

    Guaranteed to Fit 1994 Peterbilt 378

    Replaces Mirror TRQ MRA08654

    Mirror
    Brand: TRQ - MRA08654

    • Includes: Mounting Bracket
    • Design: Round
    • Heated: Yes
    • Housing Turn Signal Indicator: No
    • Mirror Turn Signal Indicator: No
    • Adjustment Type: Manual
    • Cover Finish: Smooth
    • Cover Color: Stainless Steel
    • Housing Color: Stainless Steel
    $44.95
    Save 24%
    List $58.95 Save $14.00

    Guaranteed to Fit 1994 Peterbilt 378

    Guaranteed to Fit 1994 Peterbilt 378

  • Notify When Available
    Mirror

    Replaces Mirror TRQ MRA07155

    Brand: TRQ - MRA07155

    • Mirror Head Style: Peaked Back
    • Mirror Type: West Coast
    • Heated: Yes
    • Adjustment Type: Manual
    • Housing Turn Signal Indicator: No
    • Mirror Turn Signal Indicator: No
    • Cover Finish: Smooth
    • Cover Color: Stainless Steel
    • Housing Color: Stainless Steel
    $46.95
    Save 22%
    List $59.95 Save $13.00

    Guaranteed to Fit 1994 Peterbilt 378

    Guaranteed to Fit 1994 Peterbilt 378

    Replaces Mirror TRQ MRA07155

    Mirror
    Brand: TRQ - MRA07155

    • Mirror Head Style: Peaked Back
    • Mirror Type: West Coast
    • Heated: Yes
    • Adjustment Type: Manual
    • Housing Turn Signal Indicator: No
    • Mirror Turn Signal Indicator: No
    • Cover Finish: Smooth
    • Cover Color: Stainless Steel
    • Housing Color: Stainless Steel
    $46.95
    Save 22%
    List $59.95 Save $13.00

    Guaranteed to Fit 1994 Peterbilt 378

    Guaranteed to Fit 1994 Peterbilt 378

  • Notify When Available
    Mirror

    Replaces Mirror TRQ MRA08652

    Brand: TRQ - MRA08652

    • Includes: Mounting Bracket
    • Design: Round
    • Heated: Yes
    • Housing Turn Signal Indicator: No
    • Mirror Turn Signal Indicator: No
    • Adjustment Type: Manual
    • Cover Finish: Smooth
    • Cover Color: Stainless Steel
    • Housing Color: Stainless Steel
    $41.95
    Save 29%
    List $58.95 Save $17.00

    Guaranteed to Fit 1994 Peterbilt 378

    Guaranteed to Fit 1994 Peterbilt 378

    Replaces Mirror TRQ MRA08652

    Mirror
    Brand: TRQ - MRA08652

    • Includes: Mounting Bracket
    • Design: Round
    • Heated: Yes
    • Housing Turn Signal Indicator: No
    • Mirror Turn Signal Indicator: No
    • Adjustment Type: Manual
    • Cover Finish: Smooth
    • Cover Color: Stainless Steel
    • Housing Color: Stainless Steel
    $41.95
    Save 29%
    List $58.95 Save $17.00

    Guaranteed to Fit 1994 Peterbilt 378

    Guaranteed to Fit 1994 Peterbilt 378

  • Notify When Available
    Exterior Door Handle

    Replaces 1994 Peterbilt 378 without Daylight Door Front Passenger Side Exterior Door Handle TRQ DHA48836

    Brand: TRQ - DHA48836

    • Color: Chrome
    $61.95
    Save 23%
    List $80.95 Save $19.00

    Guaranteed to Fit 1994 Peterbilt 378

    Guaranteed to Fit 1994 Peterbilt 378

    Replaces 1994 Peterbilt 378 without Daylight Door Front Passenger Side Exterior Door Handle TRQ DHA48836

    Exterior Door Handle
    Brand: TRQ - DHA48836

    • Color: Chrome
    $61.95
    Save 23%
    List $80.95 Save $19.00

    Guaranteed to Fit 1994 Peterbilt 378

    Guaranteed to Fit 1994 Peterbilt 378

  • Notify When Available
    Mirror

    Replaces Mirror TRQ MRA07153

    1 reviews
    Brand: TRQ - MRA07153

    • Mirror Type: West Coast
    • Mirror Head Style: Angled Back Round Corner
    • Adjustment Type: Manual
    • Housing Turn Signal Indicator: No
    • Mirror Turn Signal Indicator: No
    • Heated: No
    • Cover Finish: Smooth
    • Cover Color: Stainless Steel
    • Housing Color: Stainless Steel
    $45.95
    Save 19%
    List $56.95 Save $11.00

    Guaranteed to Fit 1994 Peterbilt 378

    Guaranteed to Fit 1994 Peterbilt 378

    Replaces Mirror TRQ MRA07153

    Mirror
    1 reviews
    Brand: TRQ - MRA07153

    • Mirror Type: West Coast
    • Mirror Head Style: Angled Back Round Corner
    • Adjustment Type: Manual
    • Housing Turn Signal Indicator: No
    • Mirror Turn Signal Indicator: No
    • Heated: No
    • Cover Finish: Smooth
    • Cover Color: Stainless Steel
    • Housing Color: Stainless Steel
    $45.95
    Save 19%
    List $56.95 Save $11.00

    Guaranteed to Fit 1994 Peterbilt 378

    Guaranteed to Fit 1994 Peterbilt 378

  • Notify When Available
    Mirror

    Replaces Mirror TRQ MRA08655

    Brand: TRQ - MRA08655

    • Includes: Mounting Bracket
    • Design: Round
    • Mirror Color / Finish: Paint to Match
    • Housing Color: Black
    • Housing Turn Signal Indicator: No
    • Mirror Turn Signal Indicator: No
    • Adjustment Type: Manual
    • Cover Color: Black
    • Heated: No
    • Cover Finish: Smooth
    $34.95
    Save 26%
    List $46.95 Save $12.00

    Guaranteed to Fit 1994 Peterbilt 378

    Guaranteed to Fit 1994 Peterbilt 378

    Replaces Mirror TRQ MRA08655

    Mirror
    Brand: TRQ - MRA08655

    • Includes: Mounting Bracket
    • Design: Round
    • Mirror Color / Finish: Paint to Match
    • Housing Color: Black
    • Housing Turn Signal Indicator: No
    • Mirror Turn Signal Indicator: No
    • Adjustment Type: Manual
    • Cover Color: Black
    • Heated: No
    • Cover Finish: Smooth
    $34.95
    Save 26%
    List $46.95 Save $12.00

    Guaranteed to Fit 1994 Peterbilt 378

    Guaranteed to Fit 1994 Peterbilt 378

  • Notify When Available
    Heavy Duty Truck 16 x 7 Stainless Steel West Coast Heated Signal Mirror LH or RH

    Replaces Mirror TRQ MRA07048

    Brand: TRQ - MRA07048

    • Mirror Type: West Coast
    • Housing Turn Signal Indicator: Yes
    • Heated: Yes
    • Adjustment Type: Manual
    • Cover Finish: Smooth
    • Cover Color: Stainless Steel
    • Housing Color: Stainless Steel
    • Mirror Turn Signal Indicator: No
    • Mirror Head Style: Angled Back Square Corner
    $51.95
    Save 20%
    List $64.95 Save $13.00

    Guaranteed to Fit 1994 Peterbilt 378

    Guaranteed to Fit 1994 Peterbilt 378

    Replaces Mirror TRQ MRA07048

    Heavy Duty Truck 16 x 7 Stainless Steel West Coast Heated Signal Mirror LH or RH
    Brand: TRQ - MRA07048

    • Mirror Type: West Coast
    • Housing Turn Signal Indicator: Yes
    • Heated: Yes
    • Adjustment Type: Manual
    • Cover Finish: Smooth
    • Cover Color: Stainless Steel
    • Housing Color: Stainless Steel
    • Mirror Turn Signal Indicator: No
    • Mirror Head Style: Angled Back Square Corner
    $51.95
    Save 20%
    List $64.95 Save $13.00

    Guaranteed to Fit 1994 Peterbilt 378

    Guaranteed to Fit 1994 Peterbilt 378

1

...

2 3 4 5 6

...

19
Close



Peterbilt is a registered trademark of PACCAR Inc. 1A Auto is not affiliated with or sponsored by Peterbilt or PACCAR Inc. 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.