Honda C70 Custom Electric-Start Magneto Timing Inspection Cap Set
Two-piece metal inspection-cap set for compatible Honda C70 Custom electric-start left crankcase / magneto covers.
Verified Honda OE Layout
Honda's C70 Custom left-crankcase fiche lists 90084-428-000 superseded by 90084-471-000 for the A.C. generator inspection cap and 90087-428-000 for the 30mm cap. The fiche also lists the matching O-ring families for both openings.
Product Details
- Set: 2 metal screw-in inspection caps
- Application focus: Honda C70 Custom electric-start engines
- Small cap: Honda 90084-471-000 family
- Large cap: Honda 90087-428-000 family
- SKU: 01334-ENG
Honda OE / Part-Number Cross-References
This product is an unbranded aftermarket 2-piece inspection-cap set. The Honda numbers below are supplied as identification and fitment cross-references and are not claimed to be the manufacturer MPN of this exact kit.
- 90084-428-000 – earlier Honda A.C. generator / timing inspection cap reference
- 90084-471-000 – later Honda A.C. generator / timing inspection cap reference
- 90084-MN8-010 / 90084-KPS-900 – later Honda 14mm cap references used on some CG125 applications
- 90087-428-000 – Honda 30mm inspection cap reference used on Cub-family left crankcase covers
- 90087-KGA-850 / 90087-MR1-000 – Honda 30mm cap references used on CG125 applications depending on year
- 91303-377-000 / 91303-MG7-003 – Honda 13.8 x 2.5 O-ring family for the small cap
- 91301-028-000 / 91305-KF0-003 / 91304-MG7-003 – Honda large-cap O-ring family used on Cub applications
- 91356-425-003 / 91356-425-005 – Honda 30mm-cap O-ring family used on later CG125 applications
Important Fitment Checks
- Compare both caps with the parts currently fitted before ordering.
- Confirm the small timing / A.C. generator inspection opening and the larger crank-access opening match the supplied cap diameters and threads.
- Check the left crankcase / magneto cover style, as replacement engines and aftermarket covers can use different thread sizes.
- Fit suitable O-rings and do not overtighten the caps into the aluminium engine cover.
- Model information is a guide; production year, market and previous engine swaps can change the cover specification.
Delivery & Returns
- Free UK delivery with an estimated 2–3 working-day service
- 30-day returns, subject to the item being returned in its original condition