Description

Cub Cadet RZT50 Parts Catalog

So you’ve got an RZT50 with a missing air cleaner base or a torn intake manifold gasket. You could order a generic part and hope it fits, or you could waste two hours measuring threads. I’ve seen techs order the wrong carburetor gasket three times because they didn’t have the factory parts catalog. This Cub Cadet RZT50 Parts Catalog is 47 pages of OEM part numbers and exploded diagrams. No aftermarket guesswork. If you need to know the exact screw size for the blower housing, it’s on page 4. That’s the kind of spec that keeps a mower running instead of sitting.

Every part in this catalog comes from the factory drawings. The Kohler engine section alone covers the air intake, blower housing, baffles, and controls. I’ve worked on enough RZT50s to tell you that the OEM part number is the only thing that guarantees the thread pitch matches. Aftermarket parts lists leave out the “S/P/F” codes – service, part, or fast-moving – which tells you if the part is usually in stock. This catalog has them.

Air Intake Filtration Breakdown (Page 2)

Page 2 shows the entire air intake system for the RZT50 Kohler. You get the manifold (part KH-24-164-51-S), carburetor gasket, intake port O-rings, air cleaner base, element, and pre-cleaner. Each part has a reference number, Qty, and description. Need the flat washer for the air cleaner latch? It’s KH-X-25-63, and the screw is M6x1.0x40. That level of detail saves you from ordering the wrong fastener. I keep a copy of this page pinned in my shop for quick reference.

Which Fasteners Does This Catalog Cover?

This catalog lists every hex flange screw, cap screw, and washer used on the RZT50. From M5x0.8×10 to M6x1.0x40, the thread pitch and length are written out. No “use whatever fits” instructions. Page 4 alone shows four different screw sizes for the blower housing and baffles. If you’re rebuilding an engine after a blown head gasket, you need these specs to avoid stripping aluminum threads.

Cub Cadet RZT50 Parts Catalog: 7 Systems Documented

The catalog breaks the RZT50 into seven major systems: Air Intake Filtration, Blower Housing & Baffles, Controls and Deck Lift, plus others not listed in the sample. Each system gets its own exploded diagram with part numbers. The 47 pages cover the entire mower from intake to deck. Zero fluff – only part numbers and quantities. When you need to order a backing plate (KH-32-146-05-S) or a cylinder baffle (KH-32-063-05-S), you find it fast.

Verify the Part Number Before You Order

One mistake I see all the time: a DIY guy orders an “air cleaner element” without checking the catalog. He gets the wrong size because the RZT50 uses KH-32-083-03-S, not a generic CH-123. This catalog lets you verify the part number before you click “buy”. Then you cross-reference with the S/P/F code. If it says “S” for service, the dealer usually has it in stock. If it says “/P” for part, you might need to special-order. Saves you a trip to the parts counter.

Blower Housing & Baffles: Exact Factory Fit

Page 3 and 4 cover the blower housing assembly. The housing (KH-32-027-07-S) and air cleaner cover (KH-32-096-08-S) are specific to the RZT50 Kohler. The fixed guard decal (KH-32-113-11-S) is shown as “Not Shown” but listed with part number – because the factory includes every sticker. The baffles for cylinder barrel and valley are numbered for #1 and #2 sides. If you mix them up, cooling airflow gets disrupted. This catalog shows which side gets which baffle. Cub Cadet RZT50 Parts Catalog – 53 Pages of Factory Specs is a related manual that covers similar models if you need a broader view.

Source Authenticity – Why Aftermarket Parts Lists Fail

Aftermarket parts catalogs often renumber parts or combine multiple models into one list. That leads to ordering the wrong gasket or screw. This is an OEM Cub Cadet publication. The part numbers match the factory line. If it says KH-24-041-14 for the air cleaner base gasket, that’s what Cub Cadet stamped on the part. I will never trust a third-party parts list that doesn’t show the actual exploded diagram. This catalog has the full diagram with callouts. Cub Cadet RZT50 2009 Parts Catalog – Factory Parts Breakdown is another OEM source for the same model year. Cub Cadet 21121C29025 Parts Catalog – 73 Pages of Factory Specs covers a different model but shows the same attention to detail.

Related reading: Automotive Industry Overview for context on parts numbering standards. Automotive Industry Overview again if you want to dig into industry manufacturing processes.

FAQ

Does this catalog include torque specs for the RZT50?

No. This is a parts catalog, not a service manual. It lists part numbers and quantities only. For torque values, get the factory service manual.

How many pages are in this catalog?

47 pages.

Can I use this catalog to order parts for a different Cub Cadet model?

Not directly. This catalog is specific to the RZT50 with Kohler engine. Some parts like screws or gaskets may cross-reference, but the exploded diagrams are unique to this model. If you have a different mower, look for its specific parts catalog. The part numbers here are RZT50-specific, so ordering from this list for another model will likely result in wrong parts. Always match the model number before buying.

Are the part numbers up to date for 2025?

The catalog is an original OEM document. Cub Cadet may supersede parts over time. Check with your dealer before ordering if the part number has changed.

Before you waste money on the wrong intake manifold gasket, access the factory manual. This 47-page catalog puts the exact part numbers in your hand. No guessing, no returns. Get the right part the first time. Access the Factory Manual.