Mikuni / Keihin Hex Cap Carb Float Bowl Screws With Washers – M4 × 12 mm Stainless Hex (12‑Count)

OVERVIEW

This 12-piece set of M4 × 12 mm hex screws provides dependable replacement fasteners for Mikuni and Keihin carburetor float bowls. Constructed from corrosion-resistant stainless steel, these components restore proper sealing and secure float-bowl retention during routine engine maintenance. Engineered for two-wheeler and powersports carburetor assemblies.

ENGINEERING & PERFORMANCE

The solid stainless steel body resists rust and heat cycling while maintaining tensile strength under sustained vibration. Precision-matched threading seats cleanly into the carburetor casting, preventing cross-threading and ensuring a consistent seal against fuel seepage. The integrated hex socket allows steady torque application without drive-point stripping, making direct swaps on aging castings straightforward during rebuild cycles.

KEY FEATURES

• Sets include twelve M4 × 12 mm hex cap screws paired with matching spring lock washers
• CNC-formed stainless steel construction for long-term corrosion resistance
• Hex-head profile eliminates slippage common with worn OEM JIS drive points
• Integrated spring washers dampen engine vibration and prevent loosening
• Direct dimensional match for standard Mikuni and Keihin float-bowl drains
• Ideal specification for routine carburetor cleaning, gasket replacement, and complete rebuilds
• Maintains factory-style sealing without altering calibration tolerances

TECHNICAL SPECIFICATIONS

• Brand: Aftermarket Performance Hardware
• Part Name: Float Bowl Drain Screws with Lock Washers
• Component Type: Carburetor Float-Bowl Screws
• Material: Stainless Steel
• Supported Years: Multi-year compatibility based on carburetor model
• Compatible Trims: Mikuni and Keihin flat-slide and slide-throttle carburetors

FITMENT

• Universal — fits most motorcycle, ATV, and UTV fuel-system applications as specified.

WHY RIDERS CHOOSE THIS

Riders and rebuilders select this hardware set because it directly solves the most common failure point in aging carburetors: stripped drain plugs and leaking float bowls. A-grade stainless steel prevents the galvanic corrosion and seizing that frequently trap OEM fasteners, while the hex design delivers reliable mechanical advantage where proprietary JIS drivers fail. The included spring washers actively combat high-RPM vibration, keeping the assembly sealed under full throttle. This consistent replacement ensures stable air-fuel regulation and extends service intervals across vintage and modern performance platforms.