Description

Ingersoll Rand 3118, 4116, 4118, 4120 Parts Catalog

I've been turning wrenches for 28 years, and I've seen more parts catalogs than hot meals. The problem with aftermarket listings is they leave you guessing which part number fits which serial number break. That's why I only trust factory documentation. This Ingersoll Rand 3118, 4116, 4118, 4120 Parts Catalog is the real deal – 65 pages of original OEM exploded diagrams and part numbers straight from the manufacturer. No reprints, no scanned junk.

Page 2 is your starting point. That page lists the engine model, serial, and specification numbers for each tractor: 4116 uses an Onan P216G-I, 3118 and 4118 use the P218G-I, and the 4120 uses a P220G-I. You match your tractor's PIN or serial number to the correct engine, then flip to the ENGINE section. Every part in that section has a reference number tied to a line drawing. The drawings are laid out approximately as the components sit on the machine.

Ingersoll Rand 3118, 4116, 4118, 4120 Parts Catalog: What's Inside

The catalog breaks down into two major groups: ENGINE SECTION and TRACTOR SECTION. ENGINE SECTION covers the air cleaner, carburetor, crankshaft, camshaft, flywheel, cylinder block, blower housing, governor, exhaust pipes, fuel system, oil base and pump, pistons and rods, starter. TRACTOR SECTION includes the brake assembly, choke and throttle, drawbar, frame, front axle, wheels, hood and grille, hydraulic system (control valve, lift, PTO, motor, pump, power steering), seat, speed control, transmission and final drive.

Use Page 3 to Verify Part Numbers Before Ordering

Page 3 explains the ordering process. Each illustration has a parts list on the facing page with reference numbers, part numbers, descriptions, and quantities. Footnotes like “Use as required” (UAR) or “Not sold separately” (NSS) tell you if a part is variable or only available as part of an assembly. You need to provide the correct part number, description, quantity, product model number, PIN or serial number, shipping method, and your address. Miss one detail and the order gets held up.

Brake Assembly and Hydraulic System: What's Covered

The TRACTOR SECTION devotes detailed exploded views to the brake assembly and every branch of the hydraulic system – control valve, lift cylinder, PTO clutch, drive motor, pump, and power steering lines. If you're chasing a hydraulic leak or replacing a brake shoe, you get the factory part number, not a cross-reference that may or may not fit.

Why Is an OEM Parts Catalog Better Than Aftermarket?

Aftermarket catalogs often combine multiple model years into one generic drawing, skipping serial number breaks. This catalog separates each model – 3118, 4116, 4118, 4120 – and references the exact engine spec numbers (10904C, 10904D). The index at the front and back lets you cross-check part numbers two ways. I've seen backyard rebuilds fail because a guy used a wrong piston ring from a “fits-all” listing. That doesn't happen with factory documents.

65 Pages of Factory Exploded Views

Every page of this 65-page PDF is a clean scan of the original Ingersoll Rand print. The ENGINE SECTION alone covers 13 sub-assemblies. The TRACTOR SECTION covers 16 assemblies. Paint codes and general info are included. If you need a part for the blower housing or the governor gearcase, it's in there. No fluff, no adverts, just factory part data.

Stop guessing with aftermarket parts lists. Get the actual Ingersoll Rand documentation for your 3118, 4116, 4118, or 4120 compact tractor. Access the Factory Manual now.

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For broader industry context, see Automotive Industry Overview and Automotive Industry Overview.

Frequently Asked Questions

Does this catalog include torque specs?

No. This parts catalog does not contain torque specifications.

How do I find the correct part for my 4120?

Use page 2 to match your engine model and serial number. Then flip to the appropriate section – ENGINE or TRACTOR – and locate the assembly in the illustration. The exploded views have reference numbers that correspond to the parts list on the facing page. The index at the front and back also helps narrow down the group number.

Can I use this catalog for the 3118 model?

Yes, the catalog covers 3118, 4116, 4118, and 4120 compact tractors. Each model has its own engine identification on page 2.

What if I need hydraulic system parts?

The TRACTOR SECTION includes detailed exploded views for the hydraulic system – control valve, hydraulic lift, hydraulic PTO, motor, pump, and power steering. Each assembly lists reference numbers, part numbers, and quantities. The illustrations are aligned approximately as the components appear on the machine, and footnotes provide extra identification info. Orders require the correct part number, description, quantity, model number, and identification numbers.