L-Series

L4330, L4400, L4508, L4600, L4630, L4740, L5030, L5240.

MX-Series

MX4700, MX4800, MX5100, MX5200.

M-Series

M59 (Tractor Loader Backhoe), M7040 (engine variant dependent).

Skid Steers: Bobcat S130, S150, S160, S175, S185, S205.

Track Loaders

Bobcat T140, T180, T190.

Excavators

KX91-3, KX121-3, KX161-3, U35, U45.

Generators

Found in various industrial power units (often branded as “03-M” series).

Kubota

V2403-M-DI (Naturally Aspirated), V2403-M-DI-T (Turbocharged), V2203-M-DI, V2003-M-DI

Bobcat Loaders

S150, S175, S185, T190 (Specifically models with the “M-DI” suffix engines).

Kubota Excavators

KX121-3, KX161-3 (Later versions with Direct Injection).

Kubota Tractors

L4240, L4740, L5040, L5240, L5740.

Industrial

Forklifts (Hyundai, Hyster/Yale) and Tier 2/Tier 3 generators.

• Engine Fitment: 4-Cylinder Kubota 03-M Series.
• Material Composition: The crankshaft seals are typically Fluoroelastomer (Viton) for high heat resistance, while the housing gaskets use reinforced fiber or metal-core composites.
• Application Scope: Ideal for full engine overhauls or when replacing the crankshaft (Part No. 1G790-23012).

1G486-99364 – Current Successor: The most modern and common replacement kit today.

1G486-99363 – Intermediate Revision: Fully compatible; often found in “New Old Stock.”

1G486-99362 – Legacy Version: Replaced by the -99364 for better seal longevity.

1G485-99360 – Related Kit: Often listed for the V2003 or V2203 (Non-DI) engines; check your injection type.

A-1G486-99360 – Aftermarket Code: Used by brands like Reliance, Maxiforce, and TVH.