$109.95
UniCarriers and Nissan OEM water pump assembly for Nissan K15, K21, and K25 engines, the pump that circulates coolant through the engine to keep it at operating temperature. A failing water pump leaks, weeps from the weep hole, or grows noisy before it overheats the engine. Four-bolt mounting, about 3.7 in tall and 5.57 in long.
Coolant circulation for Nissan K15, K21, and K25 engines comes from this complete water pump assembly, which the engine drives to push coolant through the block and radiator and hold operating temperature steady under load. These K-series engines power a wide range of industrial lift trucks, and steady coolant flow is what keeps them from overheating during continuous duty.
Built as a full unit with impeller, housing, and shaft, it measures about 5.57 inches long and 3.7 inches tall, mounts through four bolt holes, and weighs roughly 2.5 pounds, installing as a direct service replacement rather than a rebuild of the old pump. A water pump is replaced when the shaft bearing gets noisy or the seal starts weeping coolant, both signs the pump is near failure.
This assembly fits UniCarriers, Nissan, Crown, Caterpillar, Komatsu, Mitsubishi, and TCM equipment running the compatible K-series engines. Match the four-bolt mounting pattern and the pump body to the unit coming off, since the pump follows the engine rather than the truck brand.
| SKU | NI21010-FU425 |
|---|---|
| Product ID | 12238 |
| OEM Number | 21010-FU425 |
| Category | Cooling, Water Pump Assemblies |
| Brand | UniCarriers |
| Weight | 2.5 lbs |
| Dimensions | 1" L × 1" W × 1" H |
| Engine Compatibility | Nissan K15, K21, K25 |
|---|---|
| Total Height (on Axle) | 3.7 in (94 mm) |
| Total Length (At Longest Point) | 5.57 in (142 mm) |
| Mounting Holes | 4 |
| Compatible Brands | UniCarriers, Crown, Caterpillar, Komatsu, Mitsubishi, Nissan, TCM |
| Weight | 2.5 lbs |
| Manufacturer Part Number | 21010-FU425 |
These are the identifiers for this product. The SKU is the part number we use at Forklifts Etc. when you order. Below that you’ll also see the product ID, the OEM number when we have it, and cross-reference part numbers other manufacturers use for the same item.
| SKU Number | NI21010-FU425 |
|---|---|
| Product ID | 12238 |
| Short Link | https://forkliftsetc.net/?p=12238 |
| OEM Number | 21010-FU425 |
| Part Number |
|---|
| 800135255 |
| 800144073 |
| 800144526 |
| AC21010-50K29 |
| AC21010-50K29A |
| AC21010-FU40J |
| AC21010-FU425 |
| AC21010-FU425A |
| AC8772259 |
| AC8772259A |
| BK3511071500 |
| CR400921-00619 |
| CR8772259 |
| CT21010-FU40A |
| CT2G101-6NF00 |
| CT2G1016NF10 |
| CT50459790 |
| CT91H20-02580 |
| CT91H2002580 |
| CT91H2012580 |
| CT91H2101640 |
| DL2101050K29 |
| DL21010FU40 |
| DL21010FU400 |
| DL21010FU425 |
| DL21010FU425A |
| DW400921-00619 |
| DWKM8772259 |
| DWMB91H20-02580 |
| DWNI21010-FU40J |
| DWNI21010FU40J |
| EX21010-FU425 |
| FT21010FU425 |
| HA21010-FU425 |
| HI21010-50K26 |
| HI21010-FU425 |
| HI50459790 |
| HI91H20-02580 |
| HK8772259 |
| HM21010-FU40J |
| HM21010-FU425 |
| HM2G101-6NF10 |
| HM2G101-6NF10H |
| HY1720551 |
| HY4635887 |
| HY76000706 |
| JL91H2002580 |
| JL91H2002580JMC |
| JLJMC91H2002580 |
| JU50459790 |
| KM21010-FU40J |
| KM21010FU425 |
| KM8772259 |
| KO21010-50K29 |
| KO21010-50K29A |
| KO21010-FU400 |
| KO21010-FU40A |
| KO21010-FU40J |
| KO21010-FU425 |
| KO21010-FU425A |
| KO21010FU400 |
| KO21010FU425 |
| KO2G101-6NF10 |
| KO8772259 |
| KO8772259A |
| KO91H20-02580 |
| KO91H2002580 |
| KOGC2G1016NF10 |
| KONJ21010-FU40J |
| KONJ21010-FU425 |
| KONJ21010FU40J |
| KONJ21010FU425 |
| LI3511071500 |
| LI81023251801 |
| MB21010-FU425 |
| MB2G101-6NF10 |
| MB400921-00619 |
| MB50459790 |
| MB91H20-02580 |
| MB91H2002580 |
| MB91H2012580 |
| MB91H2101640 |
| MBMB91H20-02580 |
| NI21010-50K29 |
| NI21010-50K29A |
| NI21010-FU400 |
| NI21010-FU40A |
| NI21010-FU40J |
| NI21010-FU40JH |
| NI21010-FU425 |
| NI21010-FU425A |
| NI21010-FU425H |
| NI2101050K29 |
| NI2101050K29GN |
| NI21010FU400H |
| NI21010FU40A |
| NI21010FU425 |
| NI2G101-6NF00 |
| NI2G101-6NF10 |
| NI2G101-6NF10H |
| NI2G1016NF10 |
| NI8772259 |
| NI91H20-02580 |
| NI91H2002580 |
| NI91H2012580 |
| NIN-21010-50K29 |
| NIN-21010-FU40J |
| NIN-21010-FU425 |
| NINF91H20-02580 |
| NINF91H2002580 |
| NINI21010FU425 |
| SL21010-FU425 |
| SLBAO81023251801 |
| SLF21010FU425 |
| SY34943 |
| TC21010-50K29 |
| TC21010-FU400 |
| TC21010-FU40A |
| TC21010-FU40J |
| TC21010-FU425 |
| TC2101050K29 |
| TC21010FU40J |
| TC21010FU425 |
| TC2G101-6NF10 |
| TC91H20-02580 |
| TCN-21010-50K29 |
| TCN-21010-FU425 |
| TCN21010FU400 |
| TCN21010FU425 |
| UK21010-50K29 |
| UK21010-FU400 |
| UK21010-FU40A |
| UK21010-FU40J |
| UK21010-FU425 |
| UK2G101-6NF00 |
| UK2G101-6NF10 |
| UK2G101-6NF10H |
| UK2G1016NF |
| UK91H20-02580 |
| UK91H2101640 |
| UKN-21010-50K29 |
| UKN-21010-FU40J |
| UKN-21010-FU425 |
| UKNF91H-20025-80 |
| UV76000706 |
| YT5500985-70 |
| YT550098570 |
| YT582105277 |
| YT76000706 |
| ZG21010-FU40A |
| ZG21010-FU425 |
| ZG2G1016NF10 |
| ZG81023251801 |
| ZI21010-FU425 |
| ZI81023251801 |
| ZIBAO81023251801 |
