The Kubota 2203 Diesel has gone through several iterations including Tier and Tier Two emission compliant versions and this Shop Kink is a Field Guide for easy identification.

2203 M Series vs. BG and E Series

2203 M Series The fuel shut off solenoid is mounted in the front timing gear cover

2203 BG and E Series The fuel shut off solenoid is located behind the fuel injecton pump on block

2203 Direct vs. Indirect Injection Engines

All of the above 2203 series diesels were shipped as either direct or indirect fuel injection engines.

2203 series Kubota direct injection diesels have a push-in pencil style fuel injectors similar to a John Deere diesel

2203 series Kubota indirect injection diesels have shorter, thicker, screw in injectors similar to a Perkins diesel

O3 Series

03 Series Kubota Diesels were Tier One Emission compliant before January, 2001 using a Kubota diesel serial number prior to 4A000. They use small crankshaft bearings

03 Series Kubota Diesels were Tier Two Emission compliant effective January, 2001 and after. They use Kubota diesel serial number 4A000 and up. They used larger crankshaft bearings.

We hope that that the above Shop Kink has been helpful in identifying variatons in the 2203 Series Kubota Diesel engine. Please call or email our Dr Diesel at DrDiesel@FoleyEngines.com with any comment or additions you might like to make to this Shop Kink. Not only do we stock engine overhaul parts kits for most Kubota diesel engines, Foley Engines is committed to helping people with their engine overhauls and we believe that tech support like this matters.