
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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BESTfit 4 To 3.5 Inch O.D.-O.D. X 8 Inch OAL Aluminized Steel Reducer Pipe
BESTFIT TRUCK PARTS
$23.65BESTfit 4 To 3.5 Inch O.D.-O.D. X 8 Inch OAL Aluminized Steel Reducer PipeIntroducing the Aluminized Exhaust Reducer, engineered from durable aluminized steel to ensure longevity. Featuring dimensions of 4 inches outer diameter on one end and 3.5 inches...$23.65 -
BESTfit 4 To 3.5 Inch ID-OD X 8 Inch OAL Aluminized Steel Reducer Pipe
BESTFIT TRUCK PARTS
$26.51BESTfit 4 To 3.5 Inch ID-OD X 8 Inch OAL Aluminized Steel Reducer PipeIntroducing the Aluminized Steel Reducer, designed to seamlessly transition your exhaust system. With precise dimensions of 4 inches inside diameter and 3.5 inches outside diameter,...$26.51 -
BESTfit 4 To 3.5 Inch ID-ID X 8 Inch OAL Aluminized Steel Reducer Pipe
BESTFIT TRUCK PARTS
$29.77BESTfit 4 To 3.5 Inch ID-ID X 8 Inch OAL Aluminized Steel Reducer PipePresenting the Aluminized Steel Reducer, designed for seamless integration into your exhaust system. Featuring dimensions of 4 inches inside diameter on one end and 3.5 inches inside...$29.77 -
BESTfit 3.5 To 3 Inch OD-OD X 8 Inch OAL Aluminized Steel Reducer Pipe
BESTFIT TRUCK PARTS
$30.59BESTfit 3.5 To 3 Inch OD-OD X 8 Inch OAL Aluminized Steel Reducer PipeIntroducing the Aluminized Steel Reducer, meticulously crafted for optimal performance. With dimensions of 3.5 inches outside diameter on one end and 3 inches outside diameter on the...$30.59 -
BESTfit 5 X 13 X 10.844 Inch Aluminized Steel Universal Type C Y-Pipe
BESTFIT TRUCK PARTS
$163.99BESTfit 5 X 13 X 10.844 Inch Aluminized Steel Universal Type C Y-PipeIntroducing our Y Pipe, crafted from durable aluminized steel to withstand the rigors of your vehicle's exhaust system. This Y-shaped component features dimensions of 5 inches in...$163.99 -
BESTfit 4 X 16 X 10.5 Inch Aluminized Steel Universal Type B Y-Pipe
BESTFIT TRUCK PARTS
$170.99BESTfit 4 X 16 X 10.5 Inch Aluminized Steel Universal Type B Y-PipeIntroducing our Y Pipe, crafted from durable aluminized steel for long-lasting performance. Featuring a Y-shaped design with dimensions of 4 inches in diameter, 10.5 inches in width, and...$170.99 -
BESTfit 3.5 To 3 Inch O.D.-ID X 8 Inch OAL Aluminized Steel Reducer Pipe
BESTFIT TRUCK PARTS
$25.69BESTfit 3.5 To 3 Inch O.D.-ID X 8 Inch OAL Aluminized Steel Reducer PipeIntroducing our Aluminized Steel Reducer, designed for exceptional performance and durability. With dimensions of 3.5 inches outside diameter reducing to 3 inches inside diameter and...$25.69 -
BESTfit 3.5 To 3 Inch ID-ID X 8 Inch OAL Aluminized Steel Reducer Pipe
BESTFIT TRUCK PARTS
$22.53BESTfit 3.5 To 3 Inch ID-ID X 8 Inch OAL Aluminized Steel Reducer PipeIntroducing our Aluminized Steel Reducers, crafted for durability and performance. These reducers feature dimensions of 3.5 inches inside diameter reducing to 3 inches inside diameter,...$22.53 -
BESTfit 5 X 11 X 16 Inch Aluminized Steel Universal Type A Y-Pipe With No Divider Plate
BESTFIT TRUCK PARTS
$211.99BESTfit 5 X 11 X 16 Inch Aluminized Steel Universal Type A Y-Pipe With No Divider PlatePresenting our Aluminized Steel Y Pipe, engineered to enhance your vehicle's exhaust system performance. Crafted in a Y-shaped design, it features dimensions of 5...$211.99 -
BESTfit 5 X 14 X 25 Inch Aluminized Steel Universal Type A Y-Pipe With No Divider Plate
BESTFIT TRUCK PARTS
$264.99BESTfit 5 X 14 X 25 Inch Aluminized Steel Universal Type A Y-Pipe With No Divider PlateIntroducing our Aluminized Steel Y Pipe, designed to optimize your vehicle's exhaust system. This Y-shaped component boasts dimensions of 5 inches in diameter, 25...$264.99 -
BESTfit 5 X 14 X 25 Inch Aluminized Steel Universal Type A Y-Pipe With Divider Plate
BESTFIT TRUCK PARTS
$272.99BESTfit 5 X 14 X 25 Inch Aluminized Steel Universal Type A Y-Pipe With Divider PlateIntroducing our Type A Y Pipe, crafted from durable aluminized steel for resilience against high temperatures and corrosion. With a generous diameter of 5 inches, a width...$272.99 -
BESTfit 4 X 8 X 12 Inch Aluminized Steel Universal Type A Y-Pipe With No Divider Plate
BESTFIT TRUCK PARTS
$201.99BESTfit 4 X 8 X 12 Inch Aluminized Steel Universal Type A Y-Pipe With No Divider PlateIntroducing our Type A Y Pipe, constructed from durable aluminized steel to withstand high temperatures and resist rust and corrosion. With a diameter of 4 inches,...$201.99