Semi-Truck Exhaust Parts
Discover an extensive selection of top-quality semi-truck exhaust parts at 4 State Trucks to elevate your rig's style and performance. Whether you're seeking exhaust pipes, clamps, reducers, couplers, or sleek exhaust tips, we've got you covered with durable products from leading manufacturers like Dynaflex and Lincoln Chrome. Our premium aftermarket exhaust components are designed to leave a lasting impression on the road, allowing you to customize your truck to perfection. Elevate your truck's style and performance with 4 State Trucks' premium aftermarket exhaust components.
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BESTfit DPF 5 X 18 Inch Flex Connector Replaces A04-27334-018 For Freightliner & Western Star
BESTFIT TRUCK PARTS
$1,003.99BESTfit Exhaust Flexible Connector fits Freightliner and Western Star 5 X 18Introducing our DPF Flexible Exhaust Connector, proudly made in the USA to meet the standards of quality and performance. With a 5.000-inch inner diameter inlet and a flanged...$1,003.99 -
BESTfit 5 X 15.5 Inch Flex Connector Pipe W/ Flange & Band Clamps Replaces A04-258522-018 For Freightliner & Western Star
BESTFIT TRUCK PARTS
$464.99BESTfit Stainless Steel Exhaust Flexible Connector W/ V Band Clamps, Replaces A04-258522-018Introducing our DPF Flexible Exhaust Connector, expertly engineered and manufactured in the USA to ensure top-notch performance. With a 5.000-inch flanged inlet...$464.99 -
On Sale
BESTfit 2.5 X 14.75 Inch Flex Connector W/ Flange Replaces M666559 For Kenworth & Peterbilt
BESTFIT TRUCK PARTS
Now: $103.59Was: $147.99SS 12 3/4 Inch DPF Flex ConnectorPresenting our Connector, meticulously crafted in the USA to meet your vehicle's needs. With a 2.5-inch flange by 2.5-inch flange, compressed to 12.750 inches, this aftermarket replacement part ensures a precise fit in...Now: $103.59Was: $147.99 -
BESTfit 5 Inch X 14.5 Inch Bead Flex Connector W/ Flange Replaces M6665420335 For Kenworth & Peterbilt
BESTFIT TRUCK PARTS
$272.99BESTfit Stainless Steel 14.5 Inch Long DPF Flex Connector PipeIntroducing our Flex Connector, crafted in the USA with precision and care. This aftermarket replacement part boasts a 5-inch flange by 5-inch flange, compressed to 14.500 inches, ensuring a...$272.99 -
BESTfit 5 X 11.375 Inch Bead Flex Connector W/ Flange Replaces M6665420320 For Kenworth & Peterbilt
BESTFIT TRUCK PARTS
$215.99SS DPF Bead Flex Connector PipeOur Flex Connector, proudly made in the USA, features a 5-inch flange by 5-inch flange, compressed to 11.375 inches. Sold individually as an aftermarket replacement part, it ensures a secure fit in your exhaust system,...$215.99 -
On Sale
BESTfit 4 X 14.25 Inch Flex Connector Replaces M66-65410-405 & M66-7091-0405 For Kenworth & Peterbilt
BESTFIT TRUCK PARTS
Now: $136.50Was: $272.99BESTfit Stainless Steel 14.25 Inch Long DPF Flex Connector W/ 4 Inch FlangeOur Exhaust Connector is engineered in the USA to meet your needs. With dimensions of 4 inches flange by 4 inches flange, compressed to 14.250 inches, it ensures a secure fit in...Now: $136.50Was: $272.99 -
BESTfit 4 X 12.25 Inch Flex Connector W/ Flange Replaces M6665410335 & M6670910335 For Kenworth & Peterbilt
BESTFIT TRUCK PARTS
$256.99BESTfit Stainless Steel 12.25 Inch Long DPF Flex Connector W/ 4 Inch FlangeCrafted in the USA, our Stainless Steel Flex Connector offers durability and reliability for your needs. With dimensions of 4 inches flange by 4 inches flange, compressed to 12...$256.99 -
BESTfit 4 X 11.375 Inch Flex Connector Replaces M66-6541-0320 For Kenworth & Peterbilt
BESTFIT TRUCK PARTS
$199.99BESTfit 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,...$199.99 -
BESTfit 4 X 21 Inch Turbo Flex Connector Pipe W/ Flare, 5 & 4.65 Inch O.D. Replaces 3820024C3 For International ProStar
BESTFIT TRUCK PARTS
$784.99BESTfit 21 Inch Long DPF 4 Inch Flex Connector Turbo Pipe W/ 5 Inch O.D. FlareOur flex connectors are designed for durability and reliability, proudly made in the USA to ensure quality. Sold individually as aftermarket replacement parts, they offer a...$784.99 -
BESTfit 4 X 37 Inch 2 Bend Flare Flex Connector Turbo Pipe W/ 5 Inch O.D. Replaces 3811755C4 For International
BESTFIT TRUCK PARTS
$960.99BESTfit Stainless Steel 4 Flex Turbo Connector With Bend 5 Inch O.D.Our flex connectors are engineered for reliability and durability, ensuring optimal performance for your vehicle. Designed and manufactured in the USA, these connectors meet quality...$960.99 -
BESTfit Intermediate Elbow Replaces M66-1215 For Kenworth T600, T800 & W900
BESTFIT TRUCK PARTS
$164.99BESTfit Intermediate Elbow Fits Kenworth 1986-2006Our elbow, constructed from aluminized steel, serves as a critical component positioned on the driver's side between the exhaust tee flex pipe and the BOM elbow. Sold individually as an aftermarket...$164.99 -
BESTfit Chrome 72 Inch West Coast Turnout Stack 5 Inch O.D.
BESTFIT TRUCK PARTS
$217.99BESTfit Chrome West Coast Turn Out Top Stack 72 Inch x 5 Inch O.D. * High Quality Stack* West Coast Turn Out* Made Of Chrome-Plated Steel* 5 Inch O.D. Straight End* 72 Inch Length* Mirror-Like Finish* Quality Triplex Nickel For Improved Adhesion And...$217.99