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4.0" Exhaust Cutout

4.0" Exhaust Cutout 

A 4.0" exhaust cutout refers to a component used in automotive exhaust systems. The "4.0" specification refers to the diameter of the exhaust cutout's opening. In this case, it's a 4.0-inch diameter opening. This size measurement is critical because it needs to match the diameter of the exhaust piping to which it will be installed.

In addition to the exhaust cutout kit, spelab still sells Exhaust Header, Oil Cooler Kit, Downpipe Exhaust, EGR FCV Full Kit, etc.

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Pre-sale Valve Cover Aluminum 2007-2023 6.7L Cummins Diesel Dodge Ram 2500/3500 | SPELAB Pre-sale Valve Cover Aluminum 2007-2023 6.7L Cummins Diesel Dodge Ram 2500/3500 | SPELAB
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Pre-sale Valve Cover Aluminum 2007-2023 6.7L Cummins Diesel Dodge Ram 2500/3500 | SPELAB

$439.00 $399.99
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Intercooler - 2013-2018 6.7L Cummins Dodge Ram 2500/3500 | SPELAB Intercooler - 2013-2018 6.7L Cummins Dodge Ram 2500/3500 | SPELAB-1
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Intercooler - 2013-2018 6.7L Cummins Dodge Ram 2500/3500 | SPELAB

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Intercooler Kit - 2013-2018 6.7L Cummins Dodge Ram 2500/3500 | SPELAB Intercooler Kit - 2013-2018 6.7L Cummins Dodge Ram 2500/3500 | SPELAB
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Intercooler Kit - 2013-2018 6.7L Cummins Dodge Ram 2500/3500 | SPELAB

$998.00
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Intercooler Pipe Kit 2013-2018 6.7L Cummins Dodge Ram 2500/3500 | SPELAB Intercooler Pipe Kit 2013-2018 6.7L Cummins Dodge Ram 2500/3500 | SPELAB-1
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Intercooler Pipe Kit 2013-2018 6.7L Cummins Dodge Ram 2500/3500 | SPELAB

$149.00
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Sale
SPELAB 2.5/3.0 Custom Exhaust Kit 8 Pieces Stainless steel Tubing Mandrel Bend Pipe Straight & U-Bend Universal SPELAB 2.5/3.0 Custom Exhaust Kit 8 Pieces Stainless steel Tubing Mandrel Bend Pipe Straight & U-Bend Universal
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SPELAB 2.5/3.0 Custom Exhaust Kit 8 Pieces Stainless steel Tubing Mandrel Bend Pipe Straight & U-Bend Universal

$149.00 $89.40
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SPELAB 2.0/2.5/3.0 Inch Electric Exhaust Cutout APP Remote Kit SPELAB 2.0/2.5/3.0 Inch Electric Exhaust Cutout APP Remote Kit
SPELAB

SPELAB 2.0/2.5/3.0 Inch Electric Exhaust Cutout APP Remote Kit

$227.77
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4 4
SPELAB

4"/5" Stainless Steel Muffler Delete Pipe 30” Length for Diesel Exhaust | SPELAB

$99.00
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Axle-Back Cat-back Exhaust for 2007-2023 2.0/3.6 Jeep Wrangler JL w/Muffler Tip Axle-Back Cat-back Exhaust for 2007-2023 2.0/3.6 Jeep Wrangler JL w/Muffler Tip
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Axle-Back Cat-back Exhaust for 2007-2023 2.0/3.6 Jeep Wrangler JL w/Muffler Tip

$289.00
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SPELAB 4 Inch Remote Y Pipe Single Electric Exhaust Cutout Kit-SPELAB SPELAB 4 Inch Remote Y Pipe Single Electric Exhaust Cutout Kit-SPELAB Quick View
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SPELAB 4 Inch Remote Y Pipe Single Electric Exhaust Cutout Kit

$189.99
SPES00119S4.0
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SPELAB 4 Inch Stainless Steel Headers Y Pipe Electric Exhaust Cutout Kit Remote Control Exhaust Cut Out Catback Down Pipe Kit Application: This kit...
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$188.99
SPES00118S4.0
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Application :  This kit is compatible with all vehicles    Note: please make sure you have enough space to install before purchase and make   sure...
SPELAB 4.0 Inch Stainless Steel Exhaust Cutout Valve-SPELAB SPELAB 4.0 Inch Stainless Steel Exhaust Cutout Valve-SPELAB Quick View
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SPELAB 4.0 Inch Stainless Steel Exhaust Cutout Valve

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SPES00120
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Customers Reviews

SPELAB®

SPELAB 11-20 Ford 6.7L Powerstroke CCV PCV Reroute Engine Ventilation Kit

Good value

Rick Kment

Nice kit, with out the premium price. A must for power strokes. Comes from over seas. Took about 10 days to receive, with good Communication along the way. Going to consider other offerings from SPELAB.

SPELAB®

SPELAB 13-18 Dodge Ram 6.7L Cummins Diesel EGR Plate Cooler & Throttle Valve Delete Kit

EGR Plate cooler and throttle valve delete

Danny Pszenitzki

Great product easy install! Everything worked great have driven 10,000 miles pulling with product! No complaints.

High Speed Gear®

SPELAB 2.0/2.25/2.5/3 Inch Dual Electric Exhaust Cutout Valve Remote Switch

sound amazing

Johnny Wireman

Arrived in a timely manner, installed about 2 hours , they sound amazing , I just wish there was a phone number to contact , some of us are not as knowledgeable as some when comes to computers lolo

SPELAB

SPELAB Exhaust Header for BMW 1999-2000 E46 3-Series / 1996-2000 E39 5-Series / 1996-2001 Z3

Good material

OMAR SILVA-CHARBONIER

Good material, good prices, Only the flanges need to adapt, perfect fit just need modifications in the connection to the pipes, different angle 📐 flange need more than 90 degrees to fit the pipes , other than that is perfect fit in the engine M54, my chassis is E46 thanks for the product

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