BREATHERS / CATCH CANS

BREATHERS & CATCH CANS — 1989–1993 DODGE CUMMINS (5.9L 12-VALVE)

Reduce crankcase pressure and keep your intake clean with proven breathers & oil catch cans for 1989–1993 Dodge Ram Cummins 5.9L. CPP Diesel stocks OEM Cummins replacements and CPP-built upgrades to manage blow-by, cut down on oil mist, and prevent carbon build-up for longer engine life and consistent performance.

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Popular 89–93 Picks

Why CPP Diesel?

First-gen Cummins specialists — parts curated for VE-pump 12-valve.
OEM Cummins + CPP performance solutions for clean, reliable operation.
Fast shipping & real tech support from diesel experts.

Helpful Notes

Excessive blow-by? A baffled catch can and fresh breather often restore intake cleanliness.
Verify fitment by year/engine (1989–1993 5.9L 12-valve) and ESN when specified.
Pair breathers with fresh gaskets & seals to stop oil mist leaks at sources like the oil fill tube and vacuum pump gasket.

Frequently Asked Questions

What does a catch can do on a 12-valve Cummins?

It separates oil mist from crankcase vapors before they can re-enter the intake, reducing carbon build-up and keeping charge-air paths clean.

Do I still need the OEM breather if I add a catch can?

Yes. The catch can works with the breather to vent pressure and filter oil vapor. Replace worn OEM parts and route lines per kit instructions.

Will these parts fit all 1989–1993 trucks?

Listings specify coverage for 5.9L VE-pump 12-valve applications. Check each product page and your engine serial number if noted.

Any easy add-ons while I’m here?

Consider a new oil fill tube seal and dipstick; they’re common leak points on first-gens.

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CPP BILLET TAPPET COVER BREATHER FOR 89-02 DODGE RAM WITH 5.9L CUMMINS ENGINE

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CPP 12AN TO 12AN ORB CCV VALVE COVER BREATHER HOSE KIT FOR 1989-2018 DODGE RAM WITH CUMMINS ENGINE

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CPP LEAK STOP 10AN OIL CATCH CAN KIT FOR 89-24 DODGE RAM WITH CUMMINS ENGINE

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CPP 3921644 CUMMINS 12V OIL FILLER TUBE KIT FOR 89-98 CUMMINS 5.9L 12V

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INTERSTATE-MCBEE M-3936876 RECTANGULAR RING SEAL – OIL FILL 89–98 5.9L CUMMINS (AFTERMARKET REPLACEMENT)

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CUMMINS 3944797 OEM CRANKCASE BREATHER WITH OIL FILL HOLE – RAM 5.9L (1989–2002)

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CPP BILLET TAPPET COVER BREATHER FOR 89-02 DODGE RAM WITH 5.9L CUMMINS ENGINE
Enhancing the performance and aesthetics of your 1989-2002 Dodge Ram equipped with a 5.9L Cummins engine is seamless with the CPP Billet Tappet Cover Breather. Crafted from high-quality die-cast aluminum, this breather is designed for durability and a...

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CPP 12AN TO 12AN ORB CCV VALVE COVER BREATHER HOSE KIT FOR 1989-2018 DODGE RAM WITH CUMMINS ENGINE
The CPP 12AN TO 12AN ORB CCV Valve Cover Breather Hose Kit is an essential upgrade for Dodge Ram models equipped with a Cummins engine, specifically designed for years 1989 to 2018. This high-performance kit brings a perfect combination of functionality...

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CPP LEAK STOP 10AN OIL CATCH CAN KIT FOR 89-24 DODGE RAM WITH CUMMINS ENGINE
The CPP Leak Stop 10AN Oil Catch Can Kit is an essential upgrade for your 1989-2024 Dodge Ram equipped with a Cummins engine. Designed to efficiently manage oil blow-by, this catch can features a sophisticated baffle system that effectively traps harmful...

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CPP 3921644 CUMMINS 12V OIL FILLER TUBE KIT FOR 89-98 CUMMINS 5.9L 12V
Enhance the performance of your Cummins diesel engine with the CPP Diesel 3921644 Cummins 12V Oil Filler Tube Kit designed for models from 1989 to 1998 with a 5.9L 12V engine. This kit comes with essential components to revitalize your oil filling system...

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INTERSTATE-MCBEE M-3936876 RECTANGULAR RING SEAL – OIL FILL 89–98 5.9L CUMMINS (AFTERMARKET REPLACEMENT)
Interstate-McBee M-3936876 Rectangular Ring Seal – Oil Fill (89–98 5.9L Cummins 12V) Stop oil mist and seepage at the oil fill. The Interstate-McBee M-3936876 rectangular ring seal is an OEM-style replacement for Cummins 3936876, used on...

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CUMMINS 3944797 OEM CRANKCASE BREATHER WITH OIL FILL HOLE – RAM 5.9L (1989–2002)
Genuine Cummins Cummins 3944797 — Crankcase Breather With Integrated Oil Fill MPN: 3944797 | Also Known As: breather assembly, CCV breather, oil fill breather | Function: Vents crankcase pressure and provides a factory...

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