Peterbilt 357/378 Elbows, Piping & Comp.
Make upgrading your exhaust system a breeze with aftermarket universal elbows, piping and components for your Peterbilt 378. Find the perfect custom, chrome, and aftermarket exhaust pipes. Upgrade your Peterbilt exhaust without breaking the bank at 4 State Trucks.
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Peterbilt 378, 379, 389, 389 Glider Chrome 6 Inch Y-Pipe For BESTfit Long Leg
BESTFIT TRUCK PARTS
$569.99BESTfit Y-Pipe Fits PeterbiltThese Y-pipes are engineered from durable chrome-plated steel, ensuring longevity and corrosion resistance. With a 6-inch diameter and 5-inch inlet, they are designed specifically for BESTFIT Long Leg configurations. Sold...$569.99 -
BESTfit Chrome Exhaust Elbow 29 In Top, 20 Bottom Leg, 8 to 5 Inch Tapered Diameter For Peterbilt 378, 379
BESTFIT TRUCK PARTS
$575.99BESTfit Peterbilt Long Drop Elbow Reduced 8 Inch To 5 Inch * High Quality Drop Elbow * Chrome-Plated * 8 Inch* Long Leg * With Tapered Top Reduced To 5 Inch O.D. Bottom * Sold Individually* Warranty On Drop Elbow Against Defects In Workmanship & Material...$575.99 -
BESTfit 8 Inch Long Drop Elbow For Peterbilt 378, 379
BESTFIT TRUCK PARTS
$575.99BESTfit Peterbilt Long Drop Exhaust ElbowThe BESTfit 8 Inch Long Drop exhaust Elbow is designed for Peterbilt 378 and 379 models. It features a chrome-plated finish for a sleek and stylish look. The bottom has an 8-inch outer diameter and the top is...$575.99 -
BESTfit 7 To 5 Inch Long Drop Elbow For Peterbilt 378, 379
BESTFIT TRUCK PARTS
$490.99BESTfit Long Drop Elbow 7 To 5 Inch Fits Peterbilt * High Quality Drop Elbow * Chrome-Plated * 7 Inch* Long Leg * With Tapered Top Reduced To 5 Inch O.D. Bottom * Sold Individually* Warranty On Drop Elbow Against Defects In Workmanship & Material From...$490.99 -
BESTfit 6 To 5 Inch Long Drop Elbow For Peterbilt 378, 379
BESTFIT TRUCK PARTS
$406.99BESTfit Long Drop Elbow 6 Inch To 5 Inch Fits Peterbilt * High Quality Drop Elbow * Chrome-Plated * 6 Inch* Long Leg * With Tapered Top Reduced To 5 Inch O.D. Bottom * Sold Individually* Warranty On Drop Elbow Against Defects In Workmanship & Material...$406.99 -
BESTfit 6 Inch Long Drop Elbow For Peterbilt 378, 379
BESTFIT TRUCK PARTS
$400.99BESTfit Long Drop Elbow 6 To 6 Inch Fits Peterbilt * High Quality Drop Elbow * Chrome-Plated * 6 Inch* Long Leg * With Tapered Top 6 Inch O.D. Bottom * Sold Individually* Warranty On Drop Elbow Against Defects In Workmanship & Material From Date Of...$400.99 -
Peterbilt 357 & 378 BESTfit 5 X 18 Inch Intermediate Pipe Replaces 14-13940-0460
BESTFIT TRUCK PARTS
$170.99BESTfit Intermediate Pipe Plain Fits PeterbiltIncorporate the Intermediate Plain Pipe into your vehicle's exhaust system for seamless connectivity. Measuring 5 inches by 18 inches, this pipe efficiently connects the driver side elbow to the exhaust tee...$170.99 -
Peterbilt 378 BESTfit Exhaust Elbow Replaces OEM 14-15502
BESTFIT TRUCK PARTS
$814.99BESTfit Exhaust Elbow Fits PeterbiltUpgrade your piping system with our quality Pipe, proudly made in the USA to ensure superior craftsmanship and durability. Designed for reliable performance, each pipe is sold individually, providing you with...$814.99 -
Peterbilt 379 BESTfit 5 Inch ID/O.D. 90 Degree Elbow Pipe, Replaces 14-13433
BESTFIT TRUCK PARTS
$93.99BESTfit Lower Elbow Below Turbo Frame PipeElevate your exhaust system with our Galvanized Steel Elbow Pipe, proudly made in the USA for superior quality and durability. Designed with precision, this elbow pipe features a 5-inch inside diameter measuring...$93.99 -
Peterbilt 357 & 378 BESTfit 5 Inch Plain Exhaust Elbow Replaces 14-15503 For Passenger Side
BESTFIT TRUCK PARTS
$736.99BESTfit Exhaust Elbow Below Muffler Fits PeterbiltEnhance your exhaust system with our 5-Inch Plain Exhaust Elbow, designed for the passenger side. Crafted for durability and performance, this aftermarket replacement part is sold individually for your...$736.99 -
Peterbilt 379 BESTfit 5 Inch 75 Degree Aluminized Exhaust Elbow Below Turbo Pipe For Replaces 14-13395
BESTFIT TRUCK PARTS
$246.99Aluminized Steel 75 Degree Exhaust Elbow W/ 5 Inch I.D. Inlet & 5 Inch O.D. OutletUpgrade your exhaust system with our Aluminized Steel Exhaust Elbow. Crafted with precision from quality materials, this elbow features a 5-inch I.D. inlet and a 5-inch O.D...$246.99 -
Peterbilt BESTfit 5 Inch 90 Degree Lower Elbow Below Turbo Pipe Replaces 14-09456
BESTFIT TRUCK PARTS
$121.99Steel 90 Degree Elbow PipeUpgrade your engine setup with our durable Steel Elbow. With a 5-inch length and 90-degree angle, this elbow is designed for use below the turbo, ensuring optimal performance. Made in the USA and sold individually as an...$121.99