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 X 11.375 Inch Flex Connector Replaces M66-6541-0320 For Kenworth & Peterbilt
BESTFIT TRUCK PARTS
$214.99BESTfit DPF Exhaust Flex Connector PipeOur Flex Connector, crafted in the USA, boasts a 4-inch flange by 4-inch flange dimension, compressed to 11.375 inches. Ensuring top-notch quality, it's sold individually as an aftermarket replacement part,...$214.99 -
BESTfit 5 Inch Turbo Pipe Replaces 14-15329 For Peterbilt 377, 378 & 379
BESTFIT TRUCK PARTS
$186.99BESTfit Turbo Pipe Fits PeterbiltUpgrade your turbo system with our Turbo Pipe, expertly crafted from durable aluminized steel for long-lasting performance. Featuring a 5-inch flanged inlet and a 5-inch outer diameter outlet, this pipe ensures optimal...$186.99 -
BESTfit Chrome Exhaust Elbow Replaces 14-13906L For Peterbilt 379 Driver Side
BESTFIT TRUCK PARTS
$539.99BESTfit Driver Side Chrome Multi-Bend Exhaust Elbow For Bottom Of Muffler Fits 379 PeterbiltDiscover our Chrome-Plated Steel Exhaust Elbow, meticulously crafted to enhance your vehicle's exhaust system. Engineered with durability in mind, this elbow...$539.99 -
BESTfit 4 Inch O.D. 90 Degree 12 X 12 Inch Chrome Exhaust Elbow, Plain On Both Ends
BESTFIT TRUCK PARTS
$194.99BESTfit Exhaust ElbowUpgrade your vehicle's exhaust system with our Chrome Plated exhaust component, measuring 4 inches in diameter. Sold individually as an aftermarket replacement part, it promises to add a touch of elegance to your vehicle's exhaust...$194.99 -
BESTfit 4 Inch O.D. 90 Degree 12 X 12 Inch Aluminized Exhaust Elbow, Plain On Both Ends
BESTFIT TRUCK PARTS
$59.99BESTfit Exhaust ElbowEnhance your vehicle's exhaust system with our 90-degree angle exhaust elbow, measuring 12 x 12 inches long and featuring a 4-inch diameter. Sold individually as an aftermarket replacement part, this exhaust elbow ensures...$59.99 -
BESTfit 4 X 4 Inch Plain Exhaust Elbow
BESTFIT TRUCK PARTS
$51.99BESTfit Plain Exhaust ElbowEnhance your vehicle's exhaust system with our 90-degree bend exhaust elbow, featuring a 4-inch outer diameter. Sold individually as an aftermarket replacement part, this exhaust elbow ensures compatibility and easy...$51.99 -
BESTfit 4 Inch ID-O.D. 90 Degree 8 X 8 Inch Chrome Elbow
BESTFIT TRUCK PARTS
$176.99BESTfit 90 Degree Exhaust Elbow W/ One Bell EndEnhance your vehicle's exhaust system with our chrome-plated exhaust elbow, measuring 8 x 8 inches with a 4-inch diameter. Sold individually, this aftermarket replacement part ensures durability and style...$176.99 -
BESTfit 4 Inch I.D.-O.D. 90 Degree 12 X 12 Inch Chrome Exhaust Elbow
BESTFIT TRUCK PARTS
$214.99BESTfit Exhaust ElbowEnhance your vehicle's exhaust system with our Chrome Exhaust Elbow, featuring a 4-inch inner diameter and 4-inch outer diameter for optimal fit and performance. Crafted for durability and corrosion resistance, this elbow ensures...$214.99 -
8 X 52 Inch Replacement Spool For BESTfit Exhaust Kit
BESTFIT TRUCK PARTS
$467.99BESTfit Exhaust Spool Replacement * High Quality Exhaust Spool* Made Of Chrome-Plated Steel* 8 Inch O.D.* 52 Inch Length* Tapered Top* Sold Individually* Warranty On Exhaust Spools Against Defects In Workmanship & Material From Date Of Purchase*** High...$467.99 -
Chrome 7 X 55 Inch Spool For BESTfit Exhaust Kit For Freightliner, Kenworth, Peterbilt
BESTFIT TRUCK PARTS
$449.99BESTfit Exhaust Spool Replacement * High Quality Exhaust Spool* Made Of Chrome-Plated Steel* 7 Inch O.D.* 55 Inch Length* Tapered Top* Sold Individually* Warranty On Exhaust Spools Against Defects In Workmanship & Material From Date Of Purchase*** High...$449.99 -
Peterbilt 378 & 379 BESTfit 8 To 5 Inch 58 Degree Chrome Exhaust Elbow
BESTFIT TRUCK PARTS
$406.99BESTfit Exhaust Pipe Elbow With Tapered Top For O.D. StacksConstructed from resilient chrome-plated steel, this elbow features an impressive 8-inch outer diameter and a precise 58-degree bend, ensuring optimal exhaust flow and performance. Its tapered...$406.99 -
Peterbilt 378 & 379 BESTfit Chrome 7 To 5 Inch 60 Degree Exhaust Elbow
BESTFIT TRUCK PARTS
$396.99BESTfit Exhaust Elbow 7-5 Inch Fits Peterbilt 379 & 378Crafted from durable chrome-plated steel, this elbow boasts a substantial 7-inch outer diameter and a precise 60-degree bend, ensuring optimal exhaust flow and efficiency. Its tapered top is designed...$396.99