Kubota Cylinder Head Assembly 1G677-03028 | Genuine Loaded Head for the V1505-E3B

Kubota 1G677-03028 is the genuine loaded cylinder head assembly for the V1505-E3B, the 1.5 liter four cylinder indirect injection diesel found in Kubota compact excavators, front mowers, and a wide range of OEM equipment. Supplied as a loaded assembly with the valve components installed, it is the factory answer to a cracked head, burned valve, or overheating damage. No machine shop guesswork, no mixing worn parts with new. This part number supersedes the earlier heads 1G677-03040 and 1G677-03042, so if your parts diagram calls for either of those numbers, 1G677-03028 is the current genuine replacement. Shipping weight is approximately 28.5 lbs.

Valley Fuel Injection & Turbo is an authorized Kubota dealer and diesel fuel injection specialist in Woodland, California, serving working equipment since 1993. If you are weighing a machine shop rebuild against replacement, a genuine loaded head usually wins on total cost and downtime once you add up valve work, seats, guides, and machining. See our Kubota engine sales, parts, and service page for everything we stock for these engines.

Application & Fitment

Engine:

• Kubota V1505-E3B, 1.5L four cylinder indirect injection diesel

Kubota equipment applications confirmed in dealer catalogs:

• Kubota F3680 4WD front mower (with foldable ROPS)
• Kubota KX71-3S compact excavator (cab and canopy)
• Kubota KX030-4 compact excavator

Aftermarket sources also associate this head family with Kubota B series tractors such as the B2910, B3000, B3030, B3350, B7800, and B7820, plus the KX71-3. We treat those applications as probable rather than confirmed. The V1505 also powers many non Kubota machines, including skid steers, scissor lifts, chippers, and generator sets. Head castings changed across engine versions and emission tiers, so before you order, send us your engine serial number and we will confirm the correct head for your exact engine.

Cross-Reference Part Numbers

• 1G677-03040 | replaced by 1G677-03028 (Kubota supersession)
• 1G677-03042 | replaced by 1G677-03028 (Kubota supersession)

Aftermarket interchange listings also group this head with 1G092-03040, 1G092-03042, 1G092-03043, 1G679-03040, and 1J050-03023. Those are aftermarket associations, not Kubota supersessions, so verify against your engine serial number before substituting across them.

Frequently Asked Questions

Is this a complete, ready to install cylinder head?

Yes. 1G677-03028 is a loaded assembly, meaning the valve components come installed in the head. Plan on a new head gasket set and any hardware your rebuild requires. When you call, we will put together the complete parts list so the job only stops once.

My V1505 is in a non Kubota machine. Will this head fit?

Very likely, but verify first. Kubota builds the V1505 for many equipment brands, and the correct head depends on the engine version and emission tier, not the badge on the machine. Read the engine serial number off the block, call us at 530-668-0818, and we will confirm fitment before anything ships.

Do I actually need a head, or could it be gaskets or fuel system trouble?

White smoke, coolant loss, and hard starting can come from a failed head gasket, a cracked head, or tired injectors. A compression or leak-down test usually settles it. As injection specialists we can also test and rebuild your V1505 injectors, see our diesel fuel injection services, so the fresh head goes back on with a healthy fuel system.

Why Buy From Valley Fuel Injection

• Authorized Kubota dealer, genuine OEM parts, no gray market or knockoff castings
• Diesel injection and engine specialists since 1993, we work on these engines, not just sell parts for them
• Fitment verified against your engine serial number before we ship
• One call covers the whole job: head, gasket set, injectors, glow plugs, and thermostat for the same engine

Pricing & Availability

Call 530-668-0818 for current pricing and availability on genuine Kubota cylinder head 1G677-03028, or reach us through our contact page. Please have your engine model and engine serial number ready so we can confirm the correct head and quote any related parts for your rebuild.