CHENGU Fuel Pump Replacement Kit for Lawn Mower — 4-Pack Black, 8mm Inlet, 70mm Mount Spacing

These CHENGU fuel pumps are a 4-piece replacement set designed to restore reliable fuel delivery in compatible walk-behind and riding lawn mowers.

If your mower is sputtering, running lean, or taking longer to prime, worn fuel pumps are a common culprit — and having ready spares cuts downtime. The CHENGU kit supplies four identical black fuel pumps sized for popular small-engine models, so you can replace one now and keep extras on hand for routine maintenance or to share with fellow gardeners.

How will these fuel pumps affect mower performance?

Replacing a failing fuel pump improves steady fuel flow and helps the engine maintain proper running speed under load. New pumps reduce hesitation during acceleration and make cold starts more consistent without complicated adjustment.

• Restores steady fuel delivery to carburetor and engine
• Reduces stalling and hesitation under throttle
• Improves starting reliability after sitting between uses

Which mower models and specifications are they compatible with?

The CHENGU pumps fit a range of common mower part numbers and many similar small engines. Check the pump inlet/outlet diameters and mounting spacing against your existing part before ordering to confirm a match.

• Compatible with part numbers: 491922, 691034, 692313, 808492, 808656, 808281
• Fuel inlet/outlet/vacuum hole diameter: approximately 8 mm
• Front mounting hole center-to-center spacing: about 70 mm

What comes in the package and how easy is installation?

The kit contains four identical fuel pumps in black, ready for direct swap on machines that use the same configuration. Installation is straightforward for anyone comfortable with basic small-engine maintenance: disconnect fuel lines, unbolt the old pump, install the new unit, and reconnect lines, taking care to avoid leaks.

• Four fuel pump units per pack—keep spares for future use or share
• Simple hand tools required for most replacements
• Inspect hoses and clamps when replacing to ensure a tight seal

How should I verify fit and care for the replacement pump?

Measure your current pump’s inlet/outlet diameters and mounting hole spacing to ensure compatibility with the CHENGU dimensions. After installation, run the mower briefly and inspect for leaks; replace fuel hoses and clamps if they show wear.

• Confirm 8 mm hose bore fits your fuel lines
• Match ~70 mm mounting spacing to your pump bracket
• Check for fuel leaks after first use and retorque fasteners if needed

Who is this for: Homeowners, landscapers, and small-engine mechanics who need a cost-effective way to replace worn fuel pumps and keep mowers running reliably. The CHENGU 4-piece set is especially useful if you maintain multiple machines, like ride-ons and push mowers, or want spare parts on hand to minimize downtime during peak mowing season.