This is a new, genuine Kubota exhaust manifold, part number EG522-12313. It fits the Kubota WG1605 four-cylinder spark-ignition engine, which Kubota builds in gasoline and LPG versions.

Replace the manifold when it is cracked, warped or leaking at the head flange, or when a broken stud cannot be removed without damage. An exhaust leak ahead of the oxygen sensor upsets fuel control on these engines, so fix manifold leaks before chasing O2 sensor codes.

Specifications

Fits / Applications

• Kubota WG1605 four-cylinder gasoline/LPG engine

Use a new exhaust manifold gasket and new nuts. Check the head studs and flange face, tighten evenly from the center out to Kubota’s torque spec, and recheck for leaks after the first heat cycle.

Part Numbers & Cross Reference

Cross-reference numbers can change with engine serial, build year and emissions tier, so treat this list as a starting point. Send us your engine serial number and we will confirm the exact match against your build before anything ships. That check is free and takes a few minutes.

Why Buy From Valley Fuel Injection

We are an authorized Kubota dealer and a diesel fuel-injection shop in Woodland, CA, working on diesel engines since 1993. When you call, you talk to people who know Kubota engines, and we check the part number against your engine serial or machine model before anything ships, so the right part arrives the first time. See our Kubota engine sales, parts and service.