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 357 & 378 BESTfit 5 X 18 Inch Intermediate Pipe Replaces 14-13940-0460
BESTFIT TRUCK PARTS
$159.99BESTfit 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...$159.99 -
Peterbilt 378 BESTfit Exhaust Elbow Replaces OEM 14-15502
BESTFIT TRUCK PARTS
$771.99BESTfit 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...$771.99 -
Peterbilt 379 BESTfit 5 Inch ID/O.D. 90 Degree Elbow Pipe, Replaces 14-13433
BESTFIT TRUCK PARTS
$80.37BESTfit 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...$80.37 -
Peterbilt 357 & 378 BESTfit 5 Inch Plain Exhaust Elbow Replaces 14-15503 For Passenger Side
BESTFIT TRUCK PARTS
$701.99BESTfit 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...$701.99 -
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
$97.40Steel 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...$97.40 -
Peterbilt BESTfit Steel Exhaust Y-Pipe - 5 Inch With 9 Inch Muffler
BESTFIT TRUCK PARTS
$2,434.99BESTfit Exhaust Y-Pipe With Muffler Fits PeterbiltEnhance your vehicle's exhaust system with this sturdy component crafted from durable steel, ensuring long-lasting performance on the road. With a length of 5 inches and compatible with a 9-inch muffler,...$2,434.99 -
Freightliner BESTfit 5 Inch O.D. Chrome Y-Pipe, Replaces A04-13974-000
BESTFIT TRUCK PARTS
$477.99BESTfit Chrome-Plated Steel Y Exhaust Pipe W/ 5 Inch O.D. Inlet & OutletsUpgrade your exhaust system with this premium Exhaust Y-Pipe made of durable chrome-plated steel. Designed for optimal performance, it features a 5-inch outer diameter inlet and two...$477.99 -
BESTfit 5 Inch Diameter Steel Universal Exhaust Y-Pipe 15 Inch L X 30 Inch W
BESTFIT TRUCK PARTS
$139.99BESTfit Steel Exhaust Y-PipeEnhance your vehicle's exhaust system with our Steel 5-Inch Y-Divider Exhaust Pipe. Constructed for durability and efficiency, this aftermarket replacement part is designed to optimize exhaust flow. With dimensions of 15...$139.99 -
BESTfit 5 Inch Diameter Chrome Universal Exhaust Y-Pipe 9 Inch L X 18 Inch W
BESTFIT TRUCK PARTS
$227.99BESTfit Universal 5 Inch O.D. Exhaust Y-PipeUpgrade your exhaust system with our Chrome-Plated Steel 5-Inch Y-Divider Exhaust Pipe. Crafted for durability and style, this aftermarket replacement part features a sleek chrome-plated finish. With dimensions...$227.99 -
BESTfit 5 Inch OD Steel Universal Exhaust Y-Pipe, 9 x 18 Inch
BESTFIT TRUCK PARTS
$119.99BESTfit 5-Inch OD Inlet, 5-inch OD Outlet Steel Exhaust Y-DividerEnhance your vehicle's exhaust system with our Steel 5-Inch Diameter Exhaust Pipe. Crafted from durable steel, this aftermarket replacement part boasts a 9-inch length and an 18-inch width,...$119.99 -
BESTfit 5 Inch Diameter Steel Universal Exhaust Y-Pipe 9 Inch L X 18 Inch W
BESTFIT TRUCK PARTS
$122.99BESTfit Exhaust Y-Pipe * High Quality Exhaust Pipe * Made Of Steel* 5 Inch Y-Divider* 9 Inch Length * 18 Inch Width * 5 Inch R* Sold Individually* Warranty On Exhaust Pipe Against Defects In Workmanship & Material From Date Of Purchase*** High Quality...$122.99