Franklin
6A4-165-B3
Historical six-cylinder 6A4 exterior with dimpled rocker covers, a long wet sump, bank induction and rear carburetor. This represents the 165-B3, not the later 6A350.
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Model accuracy & scope
Reviewed exterior models with fitted geometry. Installed part numbers and component-level manual matching remain unverified unless explicitly identified.
- Reviewed first exterior; dimensions, routes and materials include fitted approximations. Not exact installed OEM geometry.
- Parts groups are a browsing aid, not an OEM exploded assembly or an installed parts catalogue.
- Internal mechanisms, functional flow and maintenance fit are not established.
- Historical 6A4-165-B3 only; later 6A350 configurations remain unbuilt.
- Regular wiring, bright alloy and nonroute topology defects remain.
- Exhaust, cooler and mounting equipment beyond the bare-engine boundary are omitted.
Use the applicable manufacturer manual and parts catalogue for maintenance and exact installation details.
Manufacturer references
These references inform the model as a whole. A component is linked to a specific page or figure only when that match has been verified.
Franklin Aircraft Engines Service Manual
Document host: s2fb76d81009e0ef4.jimcontent.com
Aircooled Motors, August 1, 1947
Reference pages: 5, 9, 14–16, 18, 21–23, 28–32, 35, 40–43
Historical 150/165 architecture and 165-specific covers, carburetor and ignition roles. No 6A350 or current serial applicability.