L-Series: L4350DT, L4400DT, L4740, L5240.

MX-Series: MX5100.

M-Series: M7060D, M6141 (engine variant dependent).

Utility/Backhoe: M59 (Tractor Loader Backhoe).

Kubota

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

Kubota Excavators

KX121-3, KX161-3, U45-3, U55

Bobcat Loaders

S150, S175, S185, S205, T180, T190

Kubota Tractors

L4240, L4310, L4330, L4630, L5030, M5040

Generators/Industrial

Various SQ and KJ series mobile generators

• Engine Series: Kubota 03-M (4-Cylinder).
• Combustion Type: Direct Injection (DI). Note: This kit is distinct from the IDI (Indirect Injection) versions which use different injector heat shields.
• Head Gasket Material: Typically Multi-Layer Steel (MLS) for Tier 4 compliant engines to handle higher combustion pressures.
• Bore Diameter Compatibility: Designed for the 87mm bore of the V2403.

1G485-99353 -nCurrent Successor: The most modern revision and the standard replacement kit today.

1G485-99352 – Intermediate Revision: Often found in existing inventory; fully interchangeable.

1G465-99350 – Related Kit: Sometimes listed for slightly different displacements within the same engine family.

1G485-99360 – Lower Gasket Kit: Often confused; this kit contains the oil pan and crank seals (the “bottom end”).

A-1G485-99350 – Aftermarket Code: Common identifier for non-OEM kits (e.g., Reliance, TVH, or Maxiforce).