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Fuel & Emission Parts

Genuine OEM Fuel & Emission Parts

A failing humidity or NOx sensor, a clogged fuel control housing, or a DEF header that's lost calibration can all trigger the same result — a derate, a fault code, and a diesel engine that won't run within emissions compliance. Because these components work together to manage combustion, exhaust treatment, and fluid delivery, a wrong or generic replacement often means the same fault code returns within weeks. That's why every part in this collection is genuine OEM, matched to the manufacturer's original part number.

What's in this category

This collection covers the core fuel and emission system components for heavy-duty diesel engines, including:

  • Humidity & exhaust gas pressure sensors — feed combustion and emissions data to the ECM
  • NOx sensors — monitor nitrogen oxide levels for SCR system compliance
  • Fuel control housings & fuel filter housings — regulate and filter fuel delivery to the engine
  • Fuel pumps — deliver fuel at the pressure your engine needs to run correctly
  • DEF headers, multifunction head units & tank jumper harnesses — manage diesel exhaust fluid level, quality, and delivery
  • Diesel exhaust fluid headers — tank-mounted assemblies for DEF systems
  • Brake booster cylinders with motor kits — hydraulic power assist for heavy-duty braking

Brands we cover

This collection includes genuine OEM parts for Cummins, International/Navistar, Mopar, Detroit Diesel, Volvo, Mack, Capacity, Hyundai, JLG and more.

Why order your fuel & emission parts here

  • Genuine OEM only — every part is matched to the manufacturer's original part number, not a generic equivalent
  • Built for accurate fitment — listings include the exact OEM number so you can verify the right part before you buy
  • Fast turnaround — ships quickly to minimize downtime and keep your engine in compliance

FAQ

What does a humidity sensor do? It measures intake air humidity so the ECM can adjust fuel and emissions calculations. Failure can trigger fault codes or unnecessary derates.

NOx sensor vs. DEF sensor? A NOx sensor checks exhaust nitrogen oxide levels to confirm the SCR system is working; a DEF sensor monitors DEF level and quality in the tank.

Signs of a failing fuel pump or housing? Hard starting, rough idle, power loss under load, stalling, or a fuel-related check engine light.

Genuine OEM or aftermarket? All parts here are genuine OEM — no generic substitutes.

How do I find the right part? Match the OEM number on your old component or check your service manual, then search that number above.

Filters

$419.00 - $419.00
$419.00
$419.00 - $419.00
$419.00

212-075-1008 Genuine Cummins NOx Nitrogen Oxide Sensor

Cummins

Product Overview The 212-075-1008 is a genuine Cummins NOx Nitrogen Oxide Sensor designed for OEM emissions system service. This sensor measures ni...

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$419.00 - $419.00
$419.00
$419.00 - $419.00
$419.00
$419.00 - $419.00
$419.00
$419.00 - $419.00
$419.00

2872779 Genuine Cummins NOx Nitrogen Oxide Exhaust Sensor

Cummins

Product Overview The 2872779 is a genuine Cummins NOx Nitrogen Oxide Exhaust Sensor designed for OEM emissions system service. This sensor monitors...

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$419.00 - $419.00
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$419.00

2897311 Genuine Cummins NOx Nitrogen Oxide Exhaust Sensor

Cummins

Product Overview The 2897311 is a genuine Cummins NOx Nitrogen Oxide Exhaust Sensor designed for OEM emissions system service. This sensor measures...

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$419.00 - $419.00
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$419.00
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$419.00
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4326476 Genuine Cummins NOx Nitrogen Oxide Exhaust Sensor

Cummins

Product Overview The 4326476 is a genuine Cummins Nox Nitrogen Oxide Sensor designed for OEM emissions system service. This sensor measures nitroge...

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$419.00 - $419.00
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$375.00 - $375.00
$375.00
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$375.00

4099788C91 Genuine International DEF Tank Assembly

International

Product Overview The 4099788C91 is a genuine International 7-gallon blow-molded DEF tank assembly developed to store diesel exhaust fluid for vehic...

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$375.00 - $375.00
$375.00
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$375.00

4099788C92 Genuine International DEF Tank Assembly

International

Product Overview The 4099788C92 is a genuine International 7-gallon blow-molded DEF tank assembly engineered to contain diesel exhaust fluid for SC...

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$375.00 - $375.00
$375.00
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$375.00

4087179C91 Genuine International DEF Tank Assembly

International

Product Overview The 4087179C91 is a genuine International 7-gallon blow-molded DEF tank assembly designed to retain diesel exhaust fluid for vehic...

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$375.00 - $375.00
$375.00
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$375.00

4097805C92 Genuine International DEF Tank Assembly

International

Product Overview The 4097805C92 is a genuine International 7-gallon blow-molded DEF tank assembly used as the fluid reservoir within the SCR emissi...

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$375.00 - $375.00
$375.00
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3998878C91 Genuine International DEF Tank Assembly

International

Product Overview The 3998878C91 is a genuine International 7-gallon DEF tank assembly built as a blow-molded reservoir for diesel exhaust fluid sto...

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$375.00 - $375.00
$375.00
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$375.00

4214372C93 Genuine International DEF Tank Assembly

International

Product Overview The 4214372C93 is a genuine International 7-gallon blow-molded DEF tank assembly designed to store diesel exhaust fluid for vehicl...

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$375.00 - $375.00
$375.00
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2526831C91 Genuine International DEF Tank Assembly

International

Product Overview The 2526831C91 is a genuine International 7-gallon DEF tank assembly designed for the diesel exhaust fluid system. It stores diese...

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$375.00 - $375.00
$375.00
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$375.00

4097805C93 Genuine International DEF Tank Assembly

International

Product Overview The 4097805C93 is a genuine International 7-gallon DEF tank assembly used in the diesel emissions system. This blow-molded tank st...

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$375.00 - $375.00
$375.00
$375.00 - $375.00
$375.00
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$375.00

4157848C91 Genuine International 7 Gal Blow Molded DEF Tank Assembly

International

Product Overview The 4157848C91 is a genuine International 7 gallon blow molded DEF tank assembly used in diesel exhaust fluid system service. This...

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$375.00 - $375.00
$375.00
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$375.00
$749.00 - $749.00
$749.00
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$749.00

4378050 Genuine Cummins Tank DEF Header

Cummins

Product Overview The 4378050 is a genuine Cummins tank DEF header used in diesel exhaust fluid system service. This header supports DEF tank monito...

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$749.00 - $749.00
$749.00
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$749.00
$489.00 - $489.00
$489.00
$489.00 - $489.00
$489.00

4326864RX Genuine Cummins NOx Nitrogen Oxide Exhaust Sensor

Cummins

Product Overview The 4326864RX is a genuine Cummins NOx Nitrogen Oxide Sensor designed for compatible Cummins emissions system applications. This s...

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$489.00 - $489.00
$489.00
$489.00 - $489.00
$489.00
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$489.00
$489.00 - $489.00
$489.00

2872943NX Genuine Cummins NOx Nitrogen Oxide Exhaust Sensor

Cummins

Product Overview The 2872943NX is a genuine Cummins NOx Nitrogen Oxide Sensor designed for compatible Cummins emissions system applications. This s...

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$489.00 - $489.00
$489.00
$489.00 - $489.00
$489.00
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$489.00
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$489.00

4326472NX Genuine Cummins NOx Nitrogen Oxide Exhaust Sensor

Cummins

Product Overview The 4326472NX is a genuine Cummins NOx Nitrogen Oxide Sensor designed for compatible Cummins emissions system applications. This s...

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$489.00 - $489.00
$489.00
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$419.00 - $419.00
$419.00
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$419.00

4326868RX Genuine Cummins NOx Nitrogen Oxide Exhaust Sensor

Cummins

Product Overview The 4326868RX is a genuine Cummins NOx Nitrogen Oxide Sensor designed for compatible Cummins emissions system applications. This s...

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$419.00 - $419.00
$419.00
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$419.00
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$419.00

10041041 Genuine Cummins NOx Nitrogen Oxide Sensor

Cummins

Product Overview The 10041041 is a genuine Cummins NOx Nitrogen Oxide Sensor designed for compatible Cummins emissions system applications. This se...

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$419.00 - $419.00
$419.00
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$419.00
$1,099.00 - $1,099.00
$1,099.00
$1,099.00 - $1,099.00
$1,099.00

TMS00194H Genuine Temsa Bus DEF Multifunction Head Unit

TEMSA BUS

Product Overview The TMS00194H is a genuine Temsa Bus DEF Multifunction Head Unit designed for compatible DEF system applications. This multifuncti...

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$1,099.00 - $1,099.00
$1,099.00
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$1,099.00
$485.00 - $485.00
$485.00
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$485.00

2120751007 Genuine Cummins NOx Nitrogen Oxide Sensor

Cummins

Product Overview The 2120751007 is a genuine Cummins NOx nitrogen oxide sensor developed for EPA13 15-liter ISX and QSX engine applications. Operat...

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$485.00 - $485.00
$485.00
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$485.00

2120751017 Genuine Cummins NOx Nitrogen Oxide Sensor

Cummins

Product Overview The 2120751017 is a genuine Cummins NOx nitrogen oxide sensor engineered for EPA13 15-liter ISX and QSX engine applications. Insta...

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$485.00 - $485.00
$485.00
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$1,029.00 - $1,029.00
$1,029.00
$1,029.00 - $1,029.00
$1,029.00

90035845PS Genuine Kalmar Ottawa DEF Sensor Head Assembly 11.6 Inch

Kalmar Ottawa

Product Overview The 90035845PS is a genuine Kalmar Ottawa DEF sensor head assembly engineered for diesel exhaust fluid system applications. This m...

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$1,029.00 - $1,029.00
$1,029.00
$1,029.00 - $1,029.00
$1,029.00
$877.00 - $877.00
$877.00
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$877.00

A2C9599570001 Genuine Cummins NOx Nitrogen Oxide Sensor

Cummins

Product Overview The A2C9599570001 is a genuine Cummins NOx nitrogen oxide sensor designed for EPA13 8.9L ISC and ISL engine applications. This sen...

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$877.00 - $877.00
$877.00
$877.00 - $877.00
$877.00