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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

$465.00 - $465.00
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$465.00 - $465.00
$465.00

A0001407439 Genuine Detroit Diesel Metr Unit Kit

Detroit Diesel

Product Overview The A0001407439 is a genuine Detroit Diesel Metr Unit Kit designed for compatible Detroit Diesel engine emissions control applicat...

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$465.00 - $465.00
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$465.00

A0001405639 Genuine Detroit Diesel Metr Unit Kit

Detroit Diesel

Product Overview The A0001405639 is a genuine Detroit Diesel Metr Unit Kit designed for compatible Detroit Diesel engine emissions control systems....

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$465.00 - $465.00
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A0001403739 Genuine Detroit Diesel Metr Unit Kit

Detroit Diesel

Product Overview The A0001403739 is a genuine Detroit Diesel Metr Unit Kit designed for compatible Detroit Diesel engine emissions system applicati...

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A0001405139 Genuine Detroit Diesel Metr Unit Kit

Detroit Diesel

Product Overview The A0001405139 is a genuine Detroit Diesel Metr Unit Kit designed for compatible Detroit Diesel emissions system applications. It...

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$439.00 - $439.00
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$439.00

22303390 Genuine Volvo Mack NOx Nitrogen Oxide Sensor

Volvo

Product Overview The 22303390 is a genuine Volvo NOx Sensor designed for factory exhaust emissions system operation. This sensor monitors nitrogen ...

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$439.00 - $439.00
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$1,459.00 - $1,459.00
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04-31354-004 Genuine Freightliner DEF Header Assembly

Freightliner

Product Overview The 04-31354-004 is a genuine Freightliner DEF Header designed for factory diesel exhaust fluid system operation. This DEF header ...

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$1,459.00 - $1,459.00
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5418479 Genuine Cummins Diesel Particulate Filter DPF

Cummins

Product Overview The 5418479 is a genuine Cummins Diesel Particulate Filter DPF designed for factory exhaust aftertreatment system operation. This ...

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90035877 Genuine Kalmar Ottawa DEF Sensor Head Assembly

Kalmar Ottawa

Product Overview The 90035877 is a genuine Kalmar Ottawa DEF Sensor Head Assembly designed for factory diesel exhaust fluid system operation. This ...

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2516662C1 Genuine International DEF Tank Level Sensor

International

Product Overview The 2516662C1 is a genuine International DEF Tank Level Sensor designed for factory diesel exhaust fluid system operation. This se...

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$1,398.00 - $1,398.00
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DZ118293 Genuine John Deere DEF Tank Header Assembly

John Deere

Product Overview The DZ118293 is a genuine John Deere DEF Tank Header Assembly designed for factory diesel exhaust fluid system operation. This hea...

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$1,245.00 - $1,245.00
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$1,189.00

325-0150-18-K Generic Diesel Exhaust Fluid Sensor Kit

Generic

Product Overview The 325-0150-18-K is a genuine Generic DEF Sensor Kit designed for factory diesel exhaust fluid system operation. This sensor kit ...

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$1,189.00 - $1,189.00
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$1,289.00
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DM701-1800F765 Genuine Spartan Diesel DEF Sensor Head

Spartan

Product Overview The DM701-1800F765 is a genuine Spartan DEF Diesel Exhaust Fluid Sensor Head designed for factory DEF system operation. This senso...

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$1,289.00 - $1,289.00
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$1,069.00
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DM701-1800F766 Genuine Spartan DEF Multifunction Head Unit

Spartan

Product Overview The DM701-1800F766 is a genuine Spartan DEF Multifunction Head Unit designed for factory diesel exhaust fluid system operation. Th...

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$1,069.00 - $1,069.00
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DC4Z5J242A Genuine Ford Multifunction DEF Head Unit

Ford

Product Overview The DC4Z5J242A is a genuine Ford multifunction DEF head unit designed for compatible diesel exhaust fluid system applications. It ...

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$1,099.00 - $1,099.00
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DC4Z-5J242-A Genuine Ford Multifunction DEF Head Unit

Ford

Product Overview The DC4Z-5J242-A is a genuine Ford multifunction DEF head unit designed for compatible diesel exhaust fluid system applications. I...

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$1,099.00 - $1,099.00
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A0001405539 Genuine Detroit Diesel Metr Unit Kit

Detroit Diesel

Product Overview The A0001405539 is a genuine Detroit Diesel Metr Unit Kit designed for compatible Detroit Diesel engine applications. It is used w...

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$465.00 - $465.00
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465017 Genuine CAT DEF Diesel Exhaust Fluid Sensor Head

CAT

Product Overview The 465017 is a genuine CAT diesel exhaust fluid control manifold engineered for CAT D1, D2, and D3 track-type tractor application...

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465-017 Genuine CAT DEF Diesel Exhaust Fluid Sensor Head

CAT

Product Overview The 465-017 is a genuine CAT Diesel Exhaust Fluid (DEF) Control Manifold designed for D1, D2, and D3 track-type tractor applicatio...

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$485.00 - $485.00
$485.00
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$485.00

2900-022 Genuine Cummins Nox Nitrogen Oxide Exhaust Sensor

Cummins

Product Overview The 2900-022 is a genuine Cummins NOx nitrogen oxide sensor engineered for OEM exhaust aftertreatment system applications. Install...

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$485.00 - $485.00
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$329.00 - $329.00
$329.00
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$329.00

212-075-1019 Genuine Cummins NOx Sensor For Cummins Engines

Cummins

Product Overview The 212-075-1019 is a genuine Cummins NOx sensor developed for compatible Cummins engine applications. This sensor operates within...

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$329.00 - $329.00
$329.00
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$329.00
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$329.00

212-075-1023 Genuine Cummins NOx Sensor For Cummins Engines

Cummins

Product Overview The 212-075-1023 is a genuine Cummins NOx sensor engineered for compatible Cummins engine applications. Installed in the exhaust a...

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$329.00 - $329.00
$329.00
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$329.00
$399.00 - $399.00
$399.00
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$399.00

2125710006 Genuine Cummins NOx Nitrogen Oxide Sensor

Cummins

Product Overview The 2125710006 is a genuine Cummins NOx Nitrogen Oxide Sensor designed for OEM emissions system service. This sensor measures nitr...

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$399.00 - $399.00
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2872946RX Genuine Cummins NOx Nitrogen Oxide Sensor ISC ISL

Cummins

Product Overview The 2872946RX is a genuine Cummins NOx Nitrogen Oxide Sensor designed for OEM emissions system service. This sensor measures nitro...

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$399.00 - $399.00
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2872946NX Genuine Cummins NOx Nitrogen Oxide Sensor ISC ISL

Cummins

Product Overview The 2872946NX is a genuine Cummins NOx Nitrogen Oxide Sensor designed for OEM emissions system service. This sensor measures nitro...

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$399.00 - $399.00
$399.00
$399.00 - $399.00
$399.00