Description

Cummins N14, ISX, ISX02, Big Cam IV, Big Cam III Parts Catalog

You pull a block out of a ’91 N14 and the tag is gone. The customer wants a ReCon long block, but the dealer wants a CPL number. Without a proper OEM parts catalog you’re dialing part numbers blind, and one wrong digit costs the shop a core charge and two days of freight. That’s why this Cummins N14, ISX, ISX02, Big Cam IV, Big Cam III Parts Catalog belongs on your bench. It’s 110 pages of factory part numbers, cross-references, and ReCon engine options straight from Cummins – not some third-party copy that misprints torque specs.

N Series Engine Detail: Twenty Years of Part Numbers

The N Series Engine Detail tab breaks down every variant from the ’85 Big Cam IV to the ISX02. Each section – 88 Big Cam IV, 86 Big Cam IV, Big Cam III, 91 N14 STC, 94 N14 Celect, 99 N14 Celect Plus, ISX Signature 600, and ISX02 – has its own upgrade chart and application parts list. You need the right piston kit for a Big Cam III? It’s there. The oil cooler gasket for a ’94 N14 Celect? Listed. The manual doesn’t lump them together. It separates by year and CPL, so you grab what matches the engine tag.

What Does the CPL Cross Reference Actually Do?

If you’ve spent time behind a parts counter, you know a CPL number is the key to getting the right block. This catalog gives you three pages of CPL-to-engine cross reference, followed by seven pages that match N series short and long blocks by CPL. That’s ten pages of direct mapping. You take the CPL off the old engine plate, flip to the Cross Reference tab, and you get the exact part number for the short block, long block, or cylinder block. No guessing, no “I think this one fits.”

3 Reasons to Use a Genuine Cummins Parts Catalog

First, the Introduction tab covers ReCon engine selection – when to use a ReCon vs. a new block, plus the Immediate Ship Program and Premium Plus option. Second, the Part Number Listing tab gives separate engine, block, and short block listings, not a jumbled spreadsheet. Third, the Core Information tab spells out acceptance standards and inspection procedures. Aftermarket catalogs skip those details; this one forces you to meet the factory core return rules so you don’t eat a chargeback.

Get the Right Part Number—Not a Guess

Flip to the N Series Automotive section. The ’88 Big Cam IV (New BCIV) is listed on page HD-C-3. The ’86 Big Cam IV (New BCIV) on HD-C-4. The Big Cam III on HD-C-5. Each page lists the block casting number, the oil pump drive, the front housing. If you’re swapping a Big Cam IV into an older chassis, the catalog gives you the application parts. It also shows optional parts – things like different pan gaskets or front covers that the aftermarket listings ignore. Use the QuickServe Online reference on the Introduction page to verify ordering codes before you submit the PO.

Core Acceptance: Factory Standards

The Core Information tab isn’t just filler. It tells you exactly how to inspect a long block or short block core before you ship it back. The Engine Core Identification section has three pages of photos showing acceptable vs. rejectable conditions. If your shop sends back a block with a cracked liner, you lose the core credit. The manual’s inspection procedures – including the block core acceptance standards – keep your shop from eating that loss. Pair it with the Cummins N14 Operation and Maintenance Manual for service procedures, or the Cummins ISX Interact System Technical Manual for electronic controls. For a full rebuild drop, grab the Cummins Signature ISX QSX15 Service Manual.

For the basics on diesel engine architecture, this Wikipedia article on diesel engines explains four-stroke cycles. If you want a deeper dive into how the 855 big cam works, this Wikipedia article on diesel engines gives the thermodynamics behind the fire.

How do I know this catalog covers my specific engine model?

Check the CPL number on your engine tag, then use the Cross Reference tab. It lists every CPL from 1985 to 1999 for N14, ISX, ISX02, Big Cam IV, and Big Cam III.

Can I use this catalog to order ReCon engines?

Yes. The Introduction tab devotes four pages to ReCon engine selection – When Should a Cummins ReCon Engine Be Considered?, Key Selling Points, Heavy Duty Glider Engines, Application Parts, Optional Parts, Immediate Ship Program, Premium Plus Option, RePower Option, Made-To-Order engines, Star Special engines, and Reassembly Engine Credit. After you pick the right block from the Part Number Listing tab, cross-reference it with the Core Information tab to understand core acceptance standards. The catalog also includes a Distributor Price List (16 pages) so you can quote the job without calling the dealer. If you need warranty details, the Warranty Information tab covers auto, bus, and Encompass extended coverage plans. The literature tab has heavy-duty automotive and industrial flyers you can hand to a fleet customer. In short, this one PDF replaces three separate dealer references.

Access the Factory Manual. Put it in the same folder as your engine job files. Next time a 91 N14 STC rolls in with a bad block, you’ll have the part number in thirty seconds – not thirty minutes.