Description

Honda ATC350X Parts Catalog – OEM Factory Parts Breakdown

Let me tell you something about ordering parts for an ATC350X. You call a dealer, give them a description, and they send you a box of wrong parts. That’s not the machine’s fault – it’s your documentation. This is the Honda ATC350X Parts Catalog – the 57-page factory document that shows you exactly which part number goes where. No aftermarket interpretation. No “this looks close” nonsense. Every number in here came out of Honda’s system, tied to the actual production run of the 1985–1986 three-wheeler.

How This Parts Catalog Is Organized

Opens with General Information, then a full page on How To Use This Catalog – that’s where they explain the reference numbers and the area code system. You get Serial Numbers for engine, frame, and carburetor, plus a Construction of Vehicle Identification Number (V.I.N.) chart. Color Tables follow, so if you’re restoring plastics, you know what shade of red or white was original. After that comes the meat: 25+ sections covering everything from the AIR CLEANER to the WIRE HARNESS. Each section has an exploded diagram with reference numbers that map to a parts list. The catalog ends with TOOLS and TRANSMISSION.

CAMSHAFT & VALVE – Exploded Views and Part Numbers

Section title is CAMSHAFT & VALVE. You get the camshaft itself, valve springs, retainers, keepers, and the valve stem seals. All listed with Honda OEM numbers. If you need a valve for an 1985 ATC350X, you’ll find the exact part – not a generic replacement that may or may not seat properly. The exploded drawing shows the order of assembly, so you don’t drop a keeper into the crankcase.

CRANKSHAFT & PISTON – OEM Part Breakdown

Separate section for CRANKSHAFT & PISTON, and then CYLINDER right after that. The crankshaft page shows the rod, bearing, and oil seal numbers. The piston section lists standard and oversize pistons with ring sets. Cylinder section includes bore specs and gasket part numbers. This is critical when you’re doing a top-end rebuild – one wrong ring pack and you’re splitting the cases again.

BRAKE SYSTEM – Front and Rear Caliper Parts

Two separate sections: FRONT BRAKE CALIPER and REAR BRAKE CALIPER, plus master cylinders for both ends. Each one includes the caliper body, pistons, seals, brake pads, and banjo bolts. If you’ve ever had a brake caliper lock up because the seal part number crossed wrong, you’ll appreciate having the factory listing. Also includes FRONT BRAKE MASTER CYLINDER and REAR BRAKE MASTER CYLINDER sections for lever and reservoir parts.

Why Factory Documentation Beats Aftermarket Parts Catalogs

Aftermarket catalogs combine parts from multiple years or models into one generic page. This Honda factory catalog separates by model year – 1985 and 1986 are both covered, but the serial number boundaries are listed so you get the correct part for your actual machine. The supersede chain is printed right in the book (check the notes on page 2 of the PDF). I’ve seen too many guys order a clutch basket from a third-party book only to find the puller thread doesn’t match. That doesn’t happen with factory numbers. If you’re working on other Honda models, the same logic applies – check out the Honda VFR750F 1994 Parts Catalog – OEM Factory Parts Breakdown or the Honda VFR400R VFR400Z 1989 Parts Catalog – OEM Factory Manual. For scooters, there’s the Honda PCX150, WW150EX 2014 Parts Catalog – OEM Factory Manual.

Audience Fit: Who Needs This Catalog?

If you’re a home garage mechanic rebuilding a barn-find ATC350X, this is the single document that saves you from ordering the wrong head gasket. Beginners can use the exploded views to understand how parts fit together before they start wrenching. Shop owners who see these machines come through the door will keep a copy to give the parts guy – no more “I need a brake seal for an ’85” and getting handed the wrong size. The wiring harness section (WIRE HARNESS in the TOC) lists connectors and terminals – even battery cables. Refer to the Automotive Battery guide for battery specifications if you need to match the cold cranking amps. For general industry background on VIN systems, the Automotive Industry Overview has more on how manufacturers encode production data.

Frequently Asked Questions

Does this catalog include exploded diagrams for the engine?

Yes. Every section like CAMSHAFT & VALVE, CRANKSHAFT & PISTON, CYLINDER, and CYLINDER HEAD has an exploded view with reference numbers that correspond to the parts list. You’ll see the exact orientation of each component.

Can I use this catalog to order parts from a Honda dealer?

Absolutely. That’s what it’s for. Each part number is the genuine Honda OEM number.

How does the serial number application work?

The catalog includes a Serial Number section that tells you which parts apply based on engine or frame serial number. For example, if your engine serial number is above a certain threshold, the piston may be a different part. This is critical because Honda made running changes during the two-year production run. You locate your serial number in the chart, then find the corresponding block in the exploded diagram – the parts list will show which reference number applies to your unit. Without that check, you could order a camshaft that fits a late 1986 but not your early 1985.

Are color codes included for the plastics?

Yes – there is a Color Tables section and color codes are appended to part numbers (e.g., ZA, ZB). The text on page 2 explains how to interpret them.

Access the Factory Manual and put it on your tablet or print the pages you need. At 57 pages, it’s compact enough to keep in the shop binder. You’ll stop chasing cross-references and start ordering the right part the first time.