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Kubota 4318 Generator Set

The Kubota 4318 is a 20.6 kW Diesel fuel No.2 (ASTM D975) standby generator set powered by a Kubota V1305 engine. It is available at 110/220 V and 127 V, 3-phase, 60 Hz and rated 156 A. It holds about 5 L (1.3 gal) of oil and 3 L (0.8 gal) of coolant. The set measures 1300×611×922 mm (51.2×24.1×36.3 in), weighs about 380 kg (838 lb) and produces 82 dBA at 7 m. An integrated tank holds 79 L (20.9 gal), roughly 10.5 hours of runtime. The same V1305 engine also powers generator sets from Cummins/Onan.

20 kW
Standby
1.335 L
Displacement
5.0 L
Oil capacity
1
Document types

How to read your Kubota serial & model number →

Typical fuel consumption for 20–25 kW Diesel generators →

Compare with other 20–25 kW Diesel generators →

Service parts for the 4318

Grouped by system, with how many of each the parts manual calls for.

Fuel system

1 required
1522143081Fuel filter$37.58eBay

Oil system

1 required

Prices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.

Specifications

FuelDiesel fuel No.2 (ASTM D975)
Frequency60.0 Hz
Standby power20 kW
Prime power18 kW
Oil capacity5.0 L
Voltage options110/220 V, 127 V
Phase3/4,3/4
Rated current[156, 208] A
Power factor[1.0, 0.8]
Coolant capacity3.0 L
Dimensions (L×W×H)1300×611×922 mm
Dry weight380 kg
Sound level82.0 dBA @ 7 m
Fuel tank79.0 L
Tank runtime[10.5, 13.1, 16.0, 18.9] hr

Engine

Kubota V1305
Oil capacity4.3 L
Coolant capacity5.0 L
Displacement1.335 L
Aspiration4-Stroke Cycle, Indirect Injection, Water Cooled Diesel
Rated speed3000 rpm

Maintenance & consumables

for the Kubota V1305
ItemSpecCapacityPart #Interval
Air filterN/A500 hr
Fuel filterN/A1522143081500 hr Amazon eBay $37.58 KuduParts $13.00
Oil filterN/A1584132431500 hr Amazon eBay $17.99 PartsGeek $10.97 FridayParts $20.00
Battery12 V (55 Ah)500 hr
BeltN/A500 hr
OilAPI CD5.7 l100 hr

Compatible filters for the Kubota V1305 — cross-referenced via Donaldson. Options to verify against your serial number, not confirmed for this exact unit.

  • Air filter: Kubota K318182240 Kubota K318182250 Donaldson P778979 Donaldson P780018 Wix 49978

Common questions

What is the power rating of the Kubota 4318?

The Kubota 4318 is rated 20 kW standby.

Which engine powers the Kubota 4318?

The Kubota 4318 is powered by the Kubota V1305 engine.

What kind of fuel does the Kubota 4318 run on?

The Kubota 4318 runs on Diesel fuel No.2 (ASTM D975).

How much oil does the Kubota 4318 take?

The Kubota V1305 engine in the Kubota 4318 has an oil capacity of 4.3 liters.

What oil filter does the Kubota 4318 use?

The Kubota 4318 uses oil filter part number 1584132431.

What fuel filter does the Kubota 4318 use?

The Kubota 4318 uses fuel filter part number 1522143081.

Which air filter part number does the Kubota 4318 take?

The Kubota 4318 uses air filter part numbers KUBOTA K318182240, KUBOTA K318182250.

Parts

9
Part #DescriptionQtySystem
122-0810Oil Filter1Oil filter Amazon $28.17 eBay $12.39
132-0349Pump Impeller1Impeller Amazon eBay FridayParts $27.99
149-2106Fuel Filter Element1Fuel filter Amazon $15.99 eBay $34.99 KuduParts $68.00
185-5990Glow Plug (12 Volt)1Glow plug Amazon eBay $55.74
185-672524V Glow Plugs1Glow plug Amazon eBay
511-0201V-BeltBelt Amazon eBay $19.99
100-3478-04Cruise KitService part / kit Amazon eBay
130-4434Zinc Pencil1Service part / kit Amazon $48.66 eBay $34.17
185-6721Breather Filter Element1Service part / kit Amazon eBay

Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.

Fuel consumption

RatingLoadL/hgal/h
Prime100%4.11.1
Standby100%2.70.7

Available documents

Spec sheet — Kubota-Genset-J-Series
Full service, cheapest listings

Priced items from this model's own parts manual.

Fuel filter 1522143081$37.58
Oil filter 1584132431$10.97
2 priced items$48.55