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.
Product categories
- Center Panels Hangers & T-Bar 396
- Mud Flap & Accessories 185
- Bezels 127
- Semi Truk Seats 2
- Clearance & Marker Lights 756
- Polishing 29
- Sun Visors 111
- Housings 15
- Window Guards 2
- Electrical Accessories 28
- Rectangular Pedestal Lights 74
- Speaker Covers & Accessories 9
- Tow Lights 1
- Chop Top & Window Trims 34
- Exhaust & Accessories 262
- Round Lights 149
- Dome & Map Lights 53
- Wire Looms & Sleeves 7
- Cab And Sleeper Panels 146
- Exterior Door Accessories 128
- Upper Cab & Sleeper Accessories 40
- Parking Lights 3
- TURN & TAIL LIGHT 1
- Fender & Guards 31
- Warning Lights 107
- Driver Convenience Goods 25
- Gladhands 4
- Star Lights 10
- Grille & Surround 120
- Wheels & Accessories 535
- Deck Plates 1
- Fairings 19
- Grommets & Bezels 83
- Work Lights 152
- Coolant Reservoirs 8
- Sleeper & Extension Panel Kit 9
- Headlight & Accessories 1083
- Performance parts 17
- Bug Deflectors 80
- Hood & Cab Accent Trim 1
- Hood & Accessories 129
- Light Accessories 140
- Sunroof Trims 2
- Sleeper Trims 7
- Horns & Accessories 56
- Light Brackets 559
- Cowl Panels 6
- Interior Door Accessories 83
- Fenders & Accessories 228
- Windshield Accessories 1
- License & Accessories 159
- Dash Accessories 1262
- Lower Center Dash Column 15
- Steering Wheels & Column Accessories 91
- Bumper Accessories 210
- Lower Dash & Floor Accessories 119
- Watermelon light 85
- Mirrors & Accessories 194
- Accessories 469
- Antenna Accessories 3
- Battery Toolboxes & Steps 63
- Breather & Fuel Tank 11
- Bumper 152
- Cab Lights 335
- Exterior & Trims 110
- Fender Lights 30
- Fenders 40
- Fog Lights 46
- Freightliner 813
- Interior & Trims 7
- International 174
- Kenworth 493
- Mack 70
- Peterbilt 698
- Turn Signal Lights 643
- Universal 420
- Volvo 88
- Western Star 54
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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.
Showing 1–24 of 208 results
Peterbilt 379/378 Cowl Panels – Blank
SKU:
TP-1304
PB. 379/378 Cowl Panels – Blank
Peterbilt 379/378 Inner Fender Trims (All Years)
SKU:
TFT-PET379F
PB. 379/378 Inner Fender Trims (All Years)
Peterbilt 379/378 Outer Fender Trims (All Years)
SKU:
TFT-PET379
PB. 379/378 Outer Fender Trims (All Years)
Peterbilt 5″ Window Chop Tops (2006-2020) – Door Mounted Mirrors | Paintable | Flange
SKU:
TP-1457
Flange|Paintable|PB. 5″ Window Chop Tops (2006-2020) – Door Mounted Mirrors
Peterbilt 5″ Window Chop Tops (2006-2020) – Cab Mounted Mirrors | Paintable | Flange
SKU:
TP-1456
Flange|Paintable|PB. 5″ Window Chop Tops (2006-2020) – Cab Mounted Mirrors
Peterbilt 5″ Window Chop Tops (2006-2020) – Cab Mounted Mirrors | Paintable
SKU:
TP-1455
Paintable|PB. 5″ Window Chop Tops (2006-2020) – Cab Mounted Mirrors
Peterbilt 5″ Window Chop Tops (2006-2020) – Door Mounted Mirrors | Paintable
SKU:
TP-1454
Paintable|PB. 5″ Window Chop Tops (2006-2020) – Door Mounted Mirrors
Peterbilt Under Door Window Trims (1973-2005) – Rivet Mount
SKU:
TP-1450
PB. Under Door Window Trims (1973-2005) – Rivet Mount
Peterbilt Door Window Trim Bezel (2005+)
SKU:
TP-1413
PB. Door Window Trim Bezel (2005+)
Peterbilt Door Window Trim Bezel (Pre-2005)
SKU:
TP-1412
PB. Door Window Trim Bezel (Pre-2005)
Peterbilt 37″ Rear Sleeper Window Trim (All Years)
SKU:
TP-1407
PB. 37″ Rear Sleeper Window Trim (All Years)
Peterbilt Door Window Shades (2005+) – Without Mirror Cutout
SKU:
TP-1402
PB. Door Window Shades (2005+) – Without Mirror Cutout
Peterbilt Cab Mounted Door Window Shades (2005-2012)- Mirror Cutout
SKU:
TP-1401
PB. Cab Mounted Door Window Shades (2005-2012)- Mirror Cutout
Peterbilt 5″ Window Chop Tops with Convex Mirror Cutout (All Years) – Cab Mounted Mirrors
SKU:
TP-1446
PB. 5″ Window Chop Tops with Convex Mirror Cutout (All Years) – Cab Mounted Mirrors
Peterbilt 379/378 Cowl Panels – 3/4″ Round LEDs (Clear Lens)
SKU:
TP-13126LC
PB. 379/378 Cowl Panels – 3/4″ Round LEDs (Clear Lens)
Peterbilt 379/378 Cowl Panels – 3/4″ Round LEDs (Amber Lens)
SKU:
TP-13126L
PB. 379/378 Cowl Panels – 3/4″ Round LEDs (Amber Lens)
Peterbilt 379/378/359 Long Hood Louvered Grille Bar Kit (All Years) – Angled | 15 Bars
SKU:
TP-1102
15 Bars|PB. 379/378/359 Long Hood Louvered Grille Bar Kit (All Years) – Angled
Peterbilt Wiper Arm Covers (All Years)
SKU:
TP-0130
PB. Wiper Arm Covers (All Years)
Peterbilt Windshield Contour & Center Trim Kit (1987+)
SKU:
TP-0196
PB. Windshield Contour & Center Trim Kit (1987+)
LED Interior Projector Dome & Map 7-Color Cab Light for Peterbilt – Black
SKU:
TLED-IR50
Black LED Interior Projector Dome & Map 7-Color Cab Light for Peterbilt 379 & 378 Models
LED Interior Projector Dome 7-Color Cab Light for Peterbilt – Black
SKU:
TLED-ID30
Black LED Interior Projector Dome 7-Color Cab Light for Peterbilt 379, 378, 377, 375 & 357 Models
Peterbilt 379/378 Rear 15″ Standard Vortox Air Cleaner LED Light Bars (1987-2004) – 16 x G2 Holes
SKU:
TP-1857
PB. 379/378 Rear 15″ Standard Vortox Air Cleaner LED Light Bars (1987-2004) – 16 x G2 Holes
Peterbilt 389/388/379/378 Front Standard Air Cleaner LED Light Bars (2005-2007) – 16 x G2 Holes
SKU:
TP-1855
PB. 389/388/379/378 Front Standard Air Cleaner LED Light Bars (2005-2007) – 16 x G2 Holes
Peterbilt 389/388/379/378 Front Standard Air Cleaner LED Light Bars (1987+) – 12 x G2 Holes
SKU:
TP-1852
PB. 389/388/379/378 Front Standard Air Cleaner LED Light Bars (1987+) – 12 x G2 Holes



