SEARCH BY VEHICLE:
Enter Vehicle Year Make Model

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

Year
Make
Model
Options
Drivetrain

Peterbilt 378 Parts

What year is your
Free Same Day Shipping

Peterbilt 378

Filter Results
  • Notify When Available
    Mirror Pair

    Replaces Driver & Passenger Side 2 Piece Mirror Set TRQ MRA08819

    Brand: TRQ
    - MRA08819

    • Mirror Mount Type: Offset 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
    $49.95
    Save 24%
    List $65.95 Save $16.00

    Replaces Driver & Passenger Side 2 Piece Mirror Set TRQ MRA08819

    Mirror Pair
    Brand: TRQ - MRA08819
    • Mirror Mount Type: Offset 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
    $49.95
    Save 24%
    List $65.95 Save $16.00
  • Notify When Available
    Heavy Duty Truck 16 x 7 OEM Style Ribbed Back Stainless Steel West Coast Mirror LH or RH

    Replaces Mirror TRQ MRA07046

    1 reviews
    Brand: TRQ
    - MRA07046

    • Mirror Head Style: Ribbed Back
    • Mirror Type: West Coast
    • 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
    $49.95
    Save 15%
    List $58.95 Save $9.00

    Replaces Mirror TRQ MRA07046

    Heavy Duty Truck 16 x 7 OEM Style Ribbed Back Stainless Steel West Coast Mirror LH or RH
    1 reviews
    Brand: TRQ - MRA07046
    • Mirror Head Style: Ribbed Back
    • Mirror Type: West Coast
    • 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
    $49.95
    Save 15%
    List $58.95 Save $9.00
  • Notify When Available
    Mirror

    Replaces Mirror TRQ MRA07154

    Brand: TRQ
    - MRA07154

    • Mirror Type: West Coast
    • Mirror Head Style: Angled Back Round Corner
    • 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
    $44.95
    Save 40%
    List $74.95 Save $30.00

    Replaces Mirror TRQ MRA07154

    Mirror
    Brand: TRQ - MRA07154
    • Mirror Type: West Coast
    • Mirror Head Style: Angled Back Round Corner
    • 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
    $44.95
    Save 40%
    List $74.95 Save $30.00
  • Notify When Available
    HVAC Heater Water Shut-Off Valve Actuator

    Replaces HVAC Heater Water Shut-Off Valve Actuator TRQ HCA40161

    Brand: TRQ
    - HCA40161

    • Material: Plastic
    $44.95
    Save 10%
    List $49.95 Save $5.00

    Replaces HVAC Heater Water Shut-Off Valve Actuator TRQ HCA40161

    HVAC Heater Water Shut-Off Valve Actuator
    Brand: TRQ - HCA40161
    • Material: Plastic
    $44.95
    Save 10%
    List $49.95 Save $5.00
  • Notify When Available
    Mirror

    Replaces Mirror TRQ MRA04107

    Brand: TRQ
    - MRA04107

    • Heated: Yes
    • Adjustment Type: Manual
    • Mirror Type: West Coast
    • Cover Color: Stainless Steel
    • Cover Finish: Smooth
    • Housing Turn Signal Indicator: Yes
    • Housing Color: Stainless Steel
    • Mirror Turn Signal Indicator: No
    • Mirror Head Style: Angled Back Round Corner
    $69.95
    Save 28%
    List $96.95 Save $27.00

    Replaces Mirror TRQ MRA04107

    Mirror
    Brand: TRQ - MRA04107
    • Heated: Yes
    • Adjustment Type: Manual
    • Mirror Type: West Coast
    • Cover Color: Stainless Steel
    • Cover Finish: Smooth
    • Housing Turn Signal Indicator: Yes
    • Housing Color: Stainless Steel
    • Mirror Turn Signal Indicator: No
    • Mirror Head Style: Angled Back Round Corner
    $69.95
    Save 28%
    List $96.95 Save $27.00
  • 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
    $39.95
    Save 25%
    List $52.95 Save $13.00

    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
    $39.95
    Save 25%
    List $52.95 Save $13.00
  • Notify When Available
    Mirror Pair

    Replaces Driver & Passenger Side 2 Piece 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
    $44.95
    Save 30%
    List $63.95 Save $19.00

    Replaces Driver & Passenger Side 2 Piece 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
    $44.95
    Save 30%
    List $63.95 Save $19.00
  • Notify When Available
    Mirror

    Replaces Mirror TRQ MRA07152

    Brand: TRQ
    - MRA07152

    • 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
    • Mirror Head Style: Angled Back Square Corner
    $49.95
    Save 32%
    List $73.95 Save $24.00

    Replaces Mirror TRQ MRA07152

    Mirror
    Brand: TRQ - MRA07152
    • 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
    • Mirror Head Style: Angled Back Square Corner
    $49.95
    Save 32%
    List $73.95 Save $24.00
  • Notify When Available
    Mirror

    Replaces Mirror TRQ MRA08651

    Brand: TRQ
    - MRA08651

    • Includes: Mounting Bracket
    • Design: Round
    • Housing Turn Signal Indicator: No
    • Mirror Turn Signal Indicator: No
    • Adjustment Type: Manual
    • Heated: No
    • Cover Finish: Smooth
    • Cover Color: Stainless Steel
    • Housing Color: Stainless Steel
    $39.95
    Save 27%
    List $54.95 Save $15.00

    Replaces Mirror TRQ MRA08651

    Mirror
    Brand: TRQ - MRA08651
    • Includes: Mounting Bracket
    • Design: Round
    • Housing Turn Signal Indicator: No
    • Mirror Turn Signal Indicator: No
    • Adjustment Type: Manual
    • Heated: No
    • Cover Finish: Smooth
    • Cover Color: Stainless Steel
    • Housing Color: Stainless Steel
    $39.95
    Save 27%
    List $54.95 Save $15.00
  • Notify When Available
    Exterior Door Handle Set

    Replaces Peterbilt 200 375 377 378 379 Front Driver & Passenger Side 2 Piece Exterior Door Handle Set TRQ DHA54772

    Brand: TRQ
    - DHA54772

    • Quantity: 2 Piece
    • Handle Color: Chrome
    • Kit Includes: (1) Front Driver Side Exterior Door Handle
    • Kit Includes: (1) Front Passenger Side Exterior Door Handle
    $124.95
    Save 31%
    List $179.95 Save $55.00

    Replaces Peterbilt 200 375 377 378 379 Front Driver & Passenger Side 2 Piece Exterior Door Handle Set TRQ DHA54772

    Exterior Door Handle Set
    Brand: TRQ - DHA54772
    • Quantity: 2 Piece
    • Handle Color: Chrome
    • Kit Includes: (1) Front Driver Side Exterior Door Handle
    • Kit Includes: (1) Front Passenger Side Exterior Door Handle
    $124.95
    Save 31%
    List $179.95 Save $55.00
1

...

2 3 4 5 6

...

16
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
Select Your Vehicle

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

Year
Make
Model
Options
Drivetrain

This part does not fit a

.
Show parts that fit