Engine-first fitment
Kubota Block Heaters
Kubota block heater part numbers for B, L and M tractors, Super Mini diesels and common D- and V-series compact engines.
Before ordering
Compact Kubota engines may use either a threaded port or a small freeze-plug location. Confirm the engine code stamped on the block.
Part numbers and locations
Kubota M, B & L series (3 & 4 cylinder)
| Part | Power | Port | Type | Cord |
|---|---|---|---|---|
| 3100093 | 400 W / 120 V | 3/4" NPT | Immersion | 3600003 |
M series: install in front. B and L series: right front, with a 1" × 3/4" pipe bushing.
Kubota Super Mini 2 & 3 cyl: Z400, Z482, D600, D640, D662, D722, DG750, DF750, WG600/750; V800 4 cyl.
| Part | Power | Port | Type | Cord |
|---|---|---|---|---|
| 3100099 | 400 W / 120 V | 30 mm | Freeze plug | 3600004 |
Installs in the back of the head. (Z600/ZH600 use the 3/4" NPT heater 3100093 at the right front instead.)
Search Kubota heater part numbers
Check the application table for your exact engine. Cords, heater elements and surface pads are separate products.
Part reference
Zerostart 3100093
Catalog starting point: confirm exact engine code, year and installation with the manufacturer.
No exact purchase listing verified yet. These links search Amazon; confirm the part before buying.
Affiliate links. As an Amazon Associate, we earn from qualifying purchases.
Part reference
Zerostart 3600003
Legacy fitment associations are not independently verified vehicle-specific purchase recommendations.
Cord / harness only — no heating element.
No exact purchase listing verified yet. These links search Amazon; confirm the part before buying.
Affiliate links. As an Amazon Associate, we earn from qualifying purchases.
Part reference
Zerostart 3100099
Catalog starting point: confirm exact engine code, year and installation with the manufacturer.
No exact purchase listing verified yet. These links search Amazon; confirm the part before buying.
Affiliate links. As an Amazon Associate, we earn from qualifying purchases.
Part reference
Zerostart 3600004
Legacy fitment associations are not independently verified vehicle-specific purchase recommendations.
Cord / harness only — no heating element.
No exact purchase listing verified yet. These links search Amazon; confirm the part before buying.
Affiliate links. As an Amazon Associate, we earn from qualifying purchases.
Location check
Clean the casting and identify the exact plug described in the table. Do not remove a similar-looking oil, gallery or drain plug.
No exact match?
Use the magnetic guide for a temporary steel-pan option, or ask the dealer to search by engine serial number.
See every agricultural engine in the complete tractor block heater guide.