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 engineered as a direct-fit replacement for select Briggs & Stratton and John Deere small engines covering model years 1972–2002.

This heavy-duty replacement starter gear is made by Boatrip to match OEM dimensions and performance for a wide range of 5–22 HP and 7–18 HP engines. Built from hardened steel and produced under automotive-grade quality systems, the 5742 is intended for mechanics, lawn-care professionals, and DIYers who need a reliable, precise gear swap that restores proper starter engagement and reduces premature wear.

Which engines and models does this starter gear fit?

The Boatrip 5742 was designed to match fitment specifications for many Briggs & Stratton and John Deere engines. It replaces part numbers such as 497595, 390838 and fits a range of small engine power outputs and OEM part references.

• Compatible OEM references: Briggs & Stratton 497595, 390838; John Deere LG497595, MIU13772, 391423, 392749.
• Power ranges covered: 5–22 HP and 7–18 HP engine variants.
• Production years typically covered: engines manufactured between 1972 and 2002.
• To confirm fit: match gear tooth count (16), spline pattern, and bore diameter to your unit.

How is the build quality and what standards does Boatrip use?

Boatrip manufactures the 5742 gear using hardened steel and strict production controls to ensure durability and consistent dimensions. The factory follows IATF 16949-based processes and has implemented VRT quality checks that emphasize precision across stamping, machining, and heat treatment stages.

• Material: premium hardened steel for long wear life.
• Quality systems: IATF 16949 compliant production and VRT inspection steps.
• Manufacturing focus: tight tolerances for accurate, repeatable fitment.
• Warranty: 2-year coverage against manufacturing defects.

What should I check before ordering and how do I install it?

Before buying, verify the tooth count (16), spline configuration, and the original OEM part number to avoid mismatch. Installation is straightforward for someone experienced with small-engine starters: remove the starter, slide off the old gear, and press on the Boatrip replacement while ensuring proper alignment and retaining hardware engagement.

• Pre-purchase checklist: tooth count, spline fit, bore size, and OEM cross-reference.
• Tools needed: basic hand tools, puller or press if required, thread-lock for fasteners as needed.
• Installation tips: clean mating surfaces, verify backlash and rotation, test engagement before full reassembly.
• When to seek help: if splines look damaged or shaft runout is present, consult a technician.

How does this replacement compare to OEM parts?

The Boatrip 5742 is engineered to meet or exceed the dimensional and wear characteristics of the original equipment gear. Its new-component construction and standardized production aim to deliver OE-level fit with aftermarket value, while the two-year warranty provides additional buyer confidence.

• Design goal: match OEM geometry and tooth profile for correct meshing.
• Longevity: hardened steel and controlled heat treatment for extended life.
• Fit accuracy: standardized machining for consistent bearing and shaft fits.
• Value: aftermarket pricing with factory QA and warranty backing.

Who is this for: The Boatrip 5742 steel starter gear is suited for maintenance shops, landscapers, and homeowners who repair or refurbish older Briggs & Stratton and John Deere small engines. If you need a precisely dimensioned, durable 16-tooth replacement that mirrors OEM fit and is backed by factory quality systems and a two-year warranty, this part is a practical choice. Always confirm your engine’s part number, tooth count, and spline measurements before purchasing to ensure an exact match.