Briggs & Stratton mechanical fuel pump replacement 808492/808656/491922 — 1/4" fuel line, E10 max

Rosotion OEM Briggs & Stratton Mikuni fuel pump (808492 / 808656 / 491922) is a direct-replacement mechanical fuel pump designed for select small engines and outdoor power equipment.

This Rosotion-supplied replacement fuel pump is manufactured to match the fit and basic function of the listed Briggs & Stratton and Mikuni OEM part numbers. It is sold as a single unit and intended for use with fuel systems that accept a 1/4" inner-diameter fuel line. The pump is not formulated for use with fuels exceeding 10% ethanol. Before purchasing, confirm compatibility by checking your engine model, serial/spec/type codes, and OEM part number to avoid returns.

How do I verify this pump fits my Briggs & Stratton engine?

To ensure correct fitment, compare the replacement part numbers (808492, 808656, 491922) against your engine’s parts list or service manual. If you do not have documentation, locate the model, type, and serial numbers on the engine housing and cross-check with supplier parts lists or our product team.

• Match OEM numbers: 808492, 808656, 491922.
• Confirm engine model, spec/type, and serial number before ordering.
• Check that your fuel line inner diameter is 1/4" for a proper connection.
• Contact seller with engine details for fitment assistance.

What are the installation basics and fuel compatibility limits?

This fuel pump replaces the factory mechanical pump and mounts in the same location using existing fasteners and fuel fittings when compatible. It accepts standard 1/4" inner-diameter fuel hose and should be installed following the engine manufacturer’s torque and routing recommendations.

• Uses 1/4" inner-diameter fuel line—secure clamps recommended.
• Not compatible with fuels exceeding 10% ethanol (E10 max).
• Follow engine-specific torque and hose routing guidelines.
• Prime and leak-test the fuel system after installation.

What does the pump include and what should I inspect on arrival?

Each purchase includes one Rosotion fuel pump as shown in the primary product image. When you receive the part, inspect the housing, inlet and outlet fittings, and mounting holes for damage. Verify labeling and part numbers against your required OEM reference.

• Contents: one (1) fuel pump, packaged as pictured.
• Inspect for bent fittings, cracked diaphragm, or damaged threads.
• Confirm printed part number matches 808492 / 808656 / 491922.
• Have model/type/spec/serial info ready if you need a replacement or return.

How can I reduce the risk of a return or incorrect purchase?

Because several engines share similar parts, taking a few extra verification steps prevents wrong purchases. Provide all engine identifiers to a product specialist if you’re unsure—this increases the chance of receiving the correct replacement on the first order.

• Provide engine model, spec/type, and serial number when asking for help.
• Compare the pump’s OEM numbers with your machine’s parts list.
• Confirm fuel compatibility (E10 or lower) before installation.
• Ask for photos or measurements if fitment appears uncertain.

Who is this for: This Rosotion OEM replacement pump is aimed at mechanics, landscapers, and owners of small-engine equipment who need a cost-effective replacement for Briggs & Stratton or Mikuni-specified fuel pumps. It is best suited for users comfortable verifying engine part numbers and performing basic fuel system installations or routine maintenance. If you need help confirming compatibility, provide your engine’s model and serial details so our specialists can assist.