2003 Peterbilt 378 Car Parts & Accessories

You have come to the right place if you need new or replacement parts for your 2003 378. Advance Auto carries over 272 aftermarket parts for your 2003 Peterbilt 378, along with original equipment manufacturer (OEM) parts. You will find amazing prices on 2003 378 Body Parts and Transmission Parts. Plus, our selection of 2003 Air Intakes for your 378 are some of the lowest in the market.

Find replacement parts and upgrades for your 2003 Peterbilt 378. Use our customer reviews of Automotive Accessories parts and others, along with user ratings on the many of the products we offer. You won’t find an easier way to shop for 2003 Peterbilt 378 performance parts, 2003 Peterbilt 378 body parts, interior components, or any type of part for that matter. Get your 378 upgraded or back in pristine shape by shopping Advance Auto Parts.

Find 2003 Peterbilt 378 Parts by Category

2003 378 Body Parts

Customers frequently purchase these best-selling 2003 Peterbilt 378 Body Parts.
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Dorman – HD Solutions – Hood Control Spring (Part No.938-5407)

Hood Control Spring

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$49.99
This hood hinge spring is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:
  • Direct replacement – this hood hinge spring matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this spring is a reliable replacement for an original part that is missing or has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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Dorman – HD Solutions – Exterior Door Handle Right (Part No.760-5425)

Exterior Door Handle Right

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$77.99
Want a new exterior door handle that matches the original, for far less than going back to the dealership? This replacement door handle was engineered to match the fit and appearance of the stock handle on specific vehicle years, makes and models.

Product Features:
  • Matching appearance – this replacement exterior door handle was specifically designed to look and function the same as the original handle on particular vehicles
  • Seamless replacement – designed to match the dimensions and specifications of the handle that came stock on the vehicle
  • Excellent value – original equipment quality at a lower price
  • Ensure fit – this handle is vehicle position specific, so double check you have the correct handle for the same position and side of the vehicle you want to replace
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2003 378 Interior Products

Dorman – HD Solutions – Throttle Position Sensor (Part No.904-7365)

Throttle Position Sensor

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$156.99
This direct replacement accelerator pedal position sensor matches the fit and performance of a failed original equipment sensor to restore proper vehicle operation. Made of quality materials for a reliable service life.

Product Features:
  • Ideal replacement – this accelerator pedal position sensor matches the fit and function of the original sensor
  • Plug & play installation – no special tools or programming required to install this sensor
  • Trustworthy construction – engineered in North America and made from high-quality materials for long life
  • Quality tested – this accelerator pedal sensor has undergone extensive testing to ensure proper function and a long service life
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Dorman – HD Solutions – Throttle Position Sensor (Part No.904-7692)

Throttle Position Sensor

from

$409.99
This direct replacement accelerator pedal position sensor matches the fit and performance of a failed original equipment sensor to restore proper vehicle operation. Made of quality materials for a reliable service life.

Product Features:
  • Ideal replacement – this accelerator pedal position sensor matches the fit and function of the original sensor
  • Plug & play installation – no special tools or programming required to install this sensor
  • Trustworthy construction – engineered in North America and made from high-quality materials for long life
  • Quality tested – this accelerator pedal sensor has undergone extensive testing to ensure proper function and a long service life
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