Fuel Injection Line Kit 16851-53720 16851-53710 16861-53733 for Kubota Engine D722 Tractor B7410D G1700 G1800 GR2100
This fuel line is engineered as a direct replacement for the Kubota Engine D722 Tractor B7410D G1700 G1800 GR2100. Manufactured to meet or exceed OEM specifications, it delivers reliable performance in demanding conditions. Each unit is tested for fuel flow, pressure rating, and durability before leaving the factory to ensure consistent quality across every order.
Vehicle Compatibility
| Application | Details |
|---|---|
| Kubota Engine D722 Tractor B7410D G1700 G1800 GR2100 Replacement Part Number:16851 | 53720, 16851-53710, 16861-53733, 1685153720, 1685153710, 1686153733, 16851-53723, 16851-53713, 16861-53730, 1685153723, 1685153713, 1686153730 Fit For |
| Kubota Engine: D722 Applications:Fit For | See product specifications |
| Kubota Tractor: B7400HSD, B7410D, BX1830D, BX1850D, G1700, G1800, G1800 | S, G1900, G1900-S, G2160, G2160AU, G2160-DS, GF1800, GF1800E, GR2100, GR2110, GR2120, GR2120B, ZD21, ZD21F, ZD221, ZD321, ZD321N, TG1860Fit For |
| Kubota Excavator: K008 | 3 KCL, K008-3 KTC, U15Fit For |
| Kubota Mower: ZD18, ZD18F | See product specifications |
Replaces OEM Part Numbers
16851-53720 • 16851-53710 • 16861-53733 • 1685153720 • 1685153710 • 1686153733 • 16851-53723 • 16851-53713 • 16861-53730 • 1685153723 • 1685153713 • 1686153730
Signs You Need a Replacement
If your equipment is showing any of these symptoms, the fuel line may be the cause:
- Fuel smell or visible wet spots — A cracked or perished fuel line seeps fuel. Diesel fuel lines harden with age and develop hairline cracks near connection points.
- Air in the fuel system — Air enters through deteriorated hoses, causing hard starting and rough running. Check all connections and replace any line that feels spongy.
- Collapsed line under suction — A reinforced fuel line can collapse internally, restricting flow. The engine runs fine at idle but starves under load.
- Fuel leaking at connection points — Old clamps lose tension and the hose shrinks over time. Always use new clamps when installing fuel lines.
Installation Tips
When installing new fuel lines, cut the ends square with a sharp blade — angled cuts cause leaks at the connection points. Use new clamps at every connection; old clamps have lost their spring tension. After installation, pressurize the system with the primer pump and check every fitting for dampness. Run the engine and recheck after 10 minutes of operation, as fittings can loosen slightly under vibration.
Frequently Asked Questions
Will this fit my Kubota D722?
Yes. This part is designed to fit the Kubota D722, B7410D, G1700, G1800 among other models listed in the compatibility table above. Verify your specific model and engine code before ordering to ensure the correct fit.
Can I cross-reference 16851-53720 with 16851-53710?
Yes. Both 16851-53720 and 16851-53710 are interchangeable OEM numbers for this part. They refer to the same component with the same specifications, just different part number revisions.
How do I check if my engine code (ZD21, ZD21F, ZD221, ZD321) matches?
The engine code is stamped on a metal tag attached to the engine block, usually near the timing belt cover or on the cylinder head. Compare the code you find with the list above. Engine codes are 3 to 6 characters long.
My vehicle is a 6851 model – is it covered?
The compatibility range for this part includes 6851-5372. The 6851 model year falls within this range, but verify the engine code and body type match. Mid-year production changes sometimes mean two vehicles from the same model year use different parts.
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