Ongaro Standard Wiper Motor Kit – 2-1/2" Shaft – 110° Sweep – SED-412421B-1

A complete, ready-to-install marine windshield wiper system from Ongaro. The SED-412421B-1 kit includes everything needed for a frame-mount wiper installation — motor, adjustable arm, and blade — so you’re not sourcing components separately or guessing at compatibility.

Built around a 12V DC motor with a 110° sweep arc and a 2-1/2" shaft, this kit suits the most common frame-mount wiper configurations on mid-size powerboats and cruisers. The powder-coated aluminum and 304 stainless steel construction is rated for saltwater environments, and the kit carries CE compliance for vessels subject to European or international safety standards.

What’s Included

• 12V DC frame-mount wiper motor — 110° sweep arc
• Adjustable wiper arm — 9-1/2" to 12-1/2" reach range
• 11" curved wiper blade
• Mounting hardware

Key Specifications

• Voltage: 12V DC
• Sweep angle: 110°
• Shaft length: 2-1/2"
• Mount style: Frame-mount
• Arm reach: Adjustable 9-1/2" to 12-1/2"
• Blade length: 11" curved
• Construction: Powder-coated aluminum and 304 stainless steel
• Compliance: CE certified
• Warranty: 3 years

Fitment Notes

This kit is not engine-specific. Compatibility is determined by your windshield frame thickness, required sweep angle, shaft length, and mounting style. Confirm all four before ordering. Compatible replacement blades range from 414212B-1 through 414222S-1 in the Ongaro blade series. Alternate part numbers: 412421B-1.

Best Use Cases

This kit is the right choice for new wiper installations on mid-size powerboats and cruisers where a 110° sweep and 2-1/2" shaft are the correct spec, and where sourcing a complete matched system is preferable to assembling individual components. It’s also a clean solution for full wiper system replacements when the motor, arm, and blade are all due for renewal at the same time.

Compatible & Related Products

• 12V Waterproof Marine Windshield Wiper Motor – 80° Sweep
• Ongaro Adjustable Wiper Arm – 13–18" – Black Stainless
• Ongaro Adjustable Wiper Arm – 10–14" – Black Stainless
• Ongaro 18" Silver Stainless Wiper Blade – SED-414218S-1
• Ongaro 20" Silver Stainless Wiper Blade – SED-414220S-1
• Ongaro 14" Black Stainless Wiper Blade – SED-414214B-1
• Wexco 14" Black 304 Stainless Wiper Blade – WEX-13614M-C
• Wexco 18" Black 304 Stainless Wiper Blade – WEX-13618M-C
• Roca W38 Marine Wiper Blade – 32" – Stainless Steel – Black
• Seachoice 11" Replacement Wiper Blade – 50-41831

Parts Desk Insights

The most common ordering mistake with wiper motor kits is not confirming shaft length before purchase — the 2-1/2" shaft on this kit suits standard windshield frame thicknesses, but thicker frames (common on larger cruisers and commercial vessels) require a longer shaft. Measure from the outside face of the windshield frame to where the arm nut will seat before ordering. The 110° sweep is the most common arc for single-motor setups; dual-motor systems or panoramic windshields may require a different sweep angle. The included 11" blade is a starting point — the adjustable arm accommodates blades up to 12-1/2" if your windshield panel needs more coverage. SKU: SED-412421B-1.