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B&C Alternator Boss Mount Kit L-40 with LR3D-14 14V - for Homebuilt

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B&C Alternator Boss Mount Kit L-40 with LR3D-14 14V - for Homebuilt

https://www.roctexo.com/web/image/product.template/288243/image_1920?unique=b2a861e
Part numbers : RX1-07-27287 , L-40-BM-LR3D-14 , L-40_BM_LR3D-14 , 07-27287
Unit of Measure: EA

1159.31 EUR / EA 1159.31 EUR 1,159.31 € excl. VAT

1159.31 EUR / EA excl. VAT

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Availability
Up to 2 EA ready to ship on Thursday 2026-10-08
Order before 16:00 CET on Tuesday 2026-10-06
Up to 3 EA ready to ship on Monday 2026-10-12
Order before 16:00 CET on Tuesday 2026-10-06
2 EA available on request, inbound freight fee of 60 EUR applies
Special order from vendor stock.

The B&C Specialty Products L-40-BM-LR3D-14 is a 14 V, 40 A belt-driven alternator system configured with the L-40 Boss Mount kit and an LR3D-14 external controller/regulator. It is intended for homebuilt and experimental aircraft electrical-system installations.

The L-40 alternator features a dynamically balanced rotor, sealed heavy-duty ball bearings, built-in cooling fans, and a third attachment point for stable support. The Boss Mount configuration is designed for installation on the engine’s machined lower mounting pad and includes the associated mounting bracket, attachment hardware, belt tension arm, high-performance belt, and pre-wired field connector assembly.

  • Manufacturer part number: L-40-BM-LR3D-14
  • Alternator output: 40 A
  • Electrical system: 14 V
  • Configuration: L-40 Boss Mount with LR3D-14 external controller/regulator
  • External regulation with over-voltage protection provided by the LR3D-14
  • For experimental/homebuilt aircraft only; not EASA/FAA approved

Confirm mounting arrangement, belt selection, wiring design, and suitability for the intended aircraft installation before purchase or installation.

Manufacturer reference material is available from B&C Specialty Products.

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