Boatrip 5742 Steel Starter Gear 16-Tooth Replacement for Briggs & Stratton & John Deere — Hardened Steel, OEM Fit, 1972–2002

Boatrip 5742 is a 16-tooth steel starter gear made as a direct-fit replacement for select Briggs & Stratton and John Deere small engines from 1972–2002.

This heavy-duty starter gear is designed to restore reliable engagement in older lawnmowers, generators, pressure washers and other small-engine equipment. Machined from hardened steel and produced under certified quality systems, the Boatrip 5742 targets common wear points where the original plastic or worn gears fail. The part is engineered to meet OEM dimensions so it fits the specified models without modification, and it arrives backed by a two-year warranty for added confidence.

Which engines and models will this starter gear fit?

This 16-tooth Boatrip gear is compatible with a broad range of Briggs & Stratton and John Deere engines produced between 1972 and 2002. It covers multiple horsepower ratings—commonly found in walk-behind mowers and similar equipment—so it’s useful for many older machines with the listed part numbers.

• Compatible with part numbers referenced: Briggs & Stratton 497595, 390838, MIU13772, 391423, 392749 and John Deere LG497595
• Fits engines rated 5–22 HP in various configurations and 7–18 HP small engines
• Designed for units built roughly from 1972 through 2002—verify by matching your engine’s original part number

How durable and precise is this replacement gear?

The Boatrip 5742 is manufactured from premium-grade steel and produced under ISO/IAFT quality systems to ensure consistent strength and dimensional accuracy. Heat treating and CNC machining deliver a gear face that resists chipping and premature wear, improving starter engagement life compared with degraded OEM parts.

• Hardened steel construction for improved wear resistance
• Manufactured under IAFT 16949 quality processes and VRT practices
• Standardized production ensures repeatable dimensions for an accurate fit

How do I confirm fit and install the gear?

Before ordering, compare the OEM part number stamped on your original gear to the list of compatible numbers or measure the tooth count and shaft dimensions. Installation is straightforward for someone comfortable with small-engine repair: remove the starter assembly, press out the old gear and press the Boatrip gear into place, keeping alignment and tolerances intact.

• Verify fit by matching part numbers or counting the 16 teeth and measuring shaft diameter
• Installation typically requires a bearing/gear puller or press and basic hand tools
• Follow torque and alignment specs from your engine manual to avoid starter binding

What warranty and quality assurances come with this part?

Boatrip provides a two-year warranty on the 5742 starter gear and emphasizes ISO/IAFT-certified manufacturing. The production process includes quality control checkpoints to meet or exceed OEM dimensional tolerances, reducing the chance of premature failure due to manufacturing defects.

• Two-year limited warranty for manufacturing defects
• Factory follows IAFT 16949 and VRT quality systems for consistent output
• Made from new premium components engineered to OEM-like standards

Who this is for: This gear is a practical replacement for mechanics, restoration hobbyists and fleet managers working on older Briggs & Stratton and John Deere small engines. If you’re repairing walk-behind mowers, compact utility tractors, generators or other vintage equipment and need a durable, correctly sized starter gear that restores reliable starter engagement, the Boatrip 5742 is built for that use. Always confirm the OEM part number or tooth/shaft measurements before purchase to ensure proper fitment.