Enhance your Peterbilt 378 with high-quality aftermarket and OEM-style replacement parts crafted for durability and performance. Our selection of Peterbilt 378 parts includes heavy-duty bumpers, chrome grilles, LED lighting upgrades, interior components, exterior trim, and precision-fit accessories built to handle demanding hauling and vocational applications. Whether you’re replacing worn parts or customizing your truck for improved looks and functionality, these rugged components deliver long-lasting reliability and style. Shop Peterbilt 378 accessories that help keep your truck performing strong day in and day out.
Shop Peterbilt 378 aftermarket and replacement truck parts including interior, exterior, and body components for reliable performance and durability.
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- Accessories 21
- Battery Toolboxes & Steps 4
- Bezels 5
- Bug Deflectors 2
- Bumper 5
- Cab And Sleeper Panels 52
- Cab Lights 60
- Center Panels Hangers & T-Bar 9
- Chop Top & Window Trims 8
- Clearance & Marker Lights 82
- Cowl Panels 3
- Dash Accessories 38
- Dome & Map Lights 10
- Driver Convenience Goods 1
- Electrical Accessories 8
- Exhaust & Accessories 2
- Exterior & Trims 5
- Exterior Door Accessories 9
- Fender & Guards 3
- Fender Lights 8
- Fenders 1
- Fenders & Accessories 2
- Fog Lights 3
- Freightliner 432
- Grille & Surround 5
- Headlight & Accessories 24
- Hood & Cab Accent Trim 5
- Horns & Accessories 3
- Interior Door Accessories 6
- International 429
- Kenworth 440
- License & Accessories 3
- Light Accessories 9
- Light Brackets 18
- Lower Center Dash Column 2
- Lower Dash & Floor Accessories 1
- Mack 421
- Anthem 421
- CH 247
- Mack CH Exterior 247
- CL 247
- Mack CL Exterior 247
- Granite 421
- Pinnacle 421
- Vision 421
- Mirrors & Accessories 2
- Mud Flap & Accessories 8
- Performance parts 1
- Peterbilt 628
- Round Lights 2
- Speaker Covers & Accessories 1
- Steering Wheels & Column Accessories 146
- Sun Visors 23
- TURN & TAIL LIGHT 4
- Universal 2
- Upper Cab & Sleeper Accessories 3
- Volvo 421
- 800 Series 421
- VNL 421
- VNR 421
- VNX Series 247
- VT 421
- Western Star 405
- 4700 247
- 4700 SB 247
- 4700 Series 247
- 4700 SF 247
- 4800 SA 247
- 4800 Series 247
- 4900 247
- 4900 CO 247
- 4900 EX 247
- 4900 FA 247
- 4900 SA 247
- 4900 Series 247
- 4900EPA 255
- 4900FA 405
- 4964 EX 247
- 4964 FA 247
- 4964 FX 247
- 4964 SA 247
- 4964 SB 247
- 4964 SX 247
- 4964EX 397
- 4964FA 247
- 4964FX 247
- 4964SX 247
- 5700 XE 247
- 6900 255
- Constellation 247
- Heritage 247
- Heritage Series 247
- Stratosphere 247
- Wheels & Accessories 17
- Windshield Accessories 4
- Work Lights 4
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Enhance your Peterbilt 378 with high-quality aftermarket and OEM-style replacement parts crafted for durability and performance. Our selection of Peterbilt 378 parts includes heavy-duty bumpers, chrome grilles, LED lighting upgrades, interior components, exterior trim, and precision-fit accessories built to handle demanding hauling and vocational applications. Whether you’re replacing worn parts or customizing your truck for improved looks and functionality, these rugged components deliver long-lasting reliability and style. Shop Peterbilt 378 accessories that help keep your truck performing strong day in and day out.
Double Fury 4 LED Fender Signal Light For 2008-2017 Kenworth T660-Amber & White LED, Passenger
SKU:
36161
Double Fury 4 LED Fender Signal Light For 2008-2017 Kenworth T660-Amber & White LED, Driver
SKU:
36160
Double Fury 4 LED Fender Signal Light For 2008-2017 Kenworth T660-Amber & Red LED, Passenger
SKU:
36159
Double Fury 4 LED Fender Signal Light For 2008-2017 Kenworth T660-Amber & Red LED, Driver
SKU:
36158
Double Fury 4 LED Fender Signal Light For 2008-2017 Kenworth T660-Amber & Green LED, Passenger
SKU:
36155
Double Fury 4 LED Fender Signal Light For 2008-2017 Kenworth T660-Amber & Green LED, Driver
SKU:
36154
Double Fury 4 LED Fender Signal Light For 2008-2017 Kenworth T660-Amber & Blue LED, Passenger
SKU:
36153
Double Fury 4 LED Fender Signal Light For 2008-2017 Kenworth T660-Amber & Blue LED, Driver
SKU:
36152
12V Starter Solenoid Assembly
SKU:
SW-3
Heavy Duty Vintage Clamp-On Dash Switch, On-Off-On
SKU:
S1206
Heavy Duty Vintage Clamp-On Dash Switch, On-Off
SKU:
S1205
Ignition Switch With 2 Keys
SKU:
S1204
Chrome “Street Machine” Script Emblem With Stud
SKU:
S1002
Chrome Hotrod Script Emblem With Mounting Studs
SKU:
S1001
6V Vintage Chrome Fog Light, Amber Lens
SKU:
C364009
12V Vintage Chrome Fog Light, Clear Lens
SKU:
C364008
12V Vintage Chrome Fog Light, Amber Lens
SKU:
C364007
6″ Curved Expanded/Slotted Bottom Exhaust – 108″ L
SKU:
C2-6-108
6″ Curved Expanded/Slotted Bottom Exhaust – 60″ L
SKU:
C2-6-060
Chrome “Streetrod” Script Emblem With Stud
SKU:
A6202
Deluxe Heavy Duty Vehicle Positioning Jack
SKU:
98999
17″ Aluminum Tire Checker Bat-Matte Black
SKU:
90056
18″ Polyurethane Rim 4 Spoke Steering Wheel With Horn Bezel
SKU:
88354
14″ Chrome Aluminum 3-Spoke Style 9-Screw Mount “Competition Series” Steering Wheel
SKU:
88296
Frequently Asked Questions
What parts are available for Peterbilt 378 trucks?
Peterbilt 378 trucks use replacement parts such as bumpers, mirrors, grilles, headlights, interior trim, and exterior accessories designed for heavy-duty trucking.
Are Peterbilt 378 aftermarket parts reliable?
Yes. Many aftermarket Peterbilt 378 parts are designed to meet heavy-duty durability standards and provide long service life.
What are common replacement parts for Peterbilt 378 trucks?
Frequently replaced components include headlights, mirrors, bumpers, grille assemblies, and dashboard parts.
Can Peterbilt 378 trucks be upgraded with aftermarket accessories?
Yes. Popular upgrades include LED lighting systems, chrome bumpers, and interior accessories that enhance both style and functionality.
Why is it important to use quality Peterbilt 378 replacement parts?
Using durable replacement parts helps maintain truck safety, reduce downtime, and ensure reliable performance during long hauls.


