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LS Marine Engines

Alpha LS Marine Engines are assembled in house by professional engine builders. After years of real world research and development Alpha Motorsports has come up with specifications and parts combinations that provide powerful and reliable engine packages.

Our marine application LS engines can be used in airboats, mudboats, or retrofitting your bow rider or speed boat!

HOLLEY EFI - 2-1/16 WIDE BAND A/F GAUGE, 8.5-18...

Standard 2-1/16" Wideband A/F Gauge, 8.5-18, Black Face. Includes gauge, wiring harness, and Bosc...

Standard 2-1/16" Wideband A/F Gauge, 8.5-18, Black Face. Includes gauge, wiring harness, and Bosch LSU 4.9 wideband O2 sensor. Holley EFI fully standalone 2-1/16" Air/Fuel Wideband O2 Gauge Kit. This highly accurate and feature packed unit is designed specifically for use with all EFI or carbureted systems and available in both black and white face versions. Completely standalone with easy-to-read analog dial - Great for EFI or carbureted applications Includes Bosch LSU 4.9 wideband O2 sens...

$218.95 $218.95 (2 variants)

HOLLEY EFI - BILLET FUEL RAILS -OE STYLE LS INT...

LS Hi-Flow Holley EFI Fuel Rails - Fits LS1, LS2, LS3, LS6 & L99 factory intakes LS Hi-Flow ...

LS Hi-Flow Holley EFI Fuel Rails - Fits LS1, LS2, LS3, LS6 & L99 factory intakes LS Hi-Flow Holley EFI Fuel Rails - Fits LS1, LS2, LS3, LS6 & L99 factory intakes Includes (4) -6 to 3/4"-16 O-ring fittings. Fuel Rail mounting brackets and required mounting hardware. Bright dip, black anodized finish with laser etched EFI logo for long lasting good looks 5/8” diameter fuel passage provides the flow capacity for high horsepower applications Fuel rails are machined to accept -8 (3/4-16)...

$159.95

HOLLEY EFI - BILLET FUEL RAIL KIT -OE STYLE LS ...

LS Hi-Flow Holley EFI Fuel Rails - Same as 534-209, but also includes (6') braided hose, (4) 90º ...

LS Hi-Flow Holley EFI Fuel Rails - Same as 534-209, but also includes (6') braided hose, (4) 90º and (2) straight -6 hose ends LS Hi-Flow Holley EFI Fuel Rails - Same as 534-209, but also includes (6') braided hose, (4) 90º and (2) straight -6 hose ends Bright dip, black anodized finish with laser etched EFI logo for long lasting good looks 5/8” diameter fuel passage provides the flow capacity for high horsepower applications Fuel rails are machined to accept -8 (3/4-16) O-ring fittings I...

$245.95

HOLLEY EFI - FUEL KIT (PERFORM-O-FLEX HOSE, HP ...

Billet Fuel Pump, Billet Regulator, Billet Filters, Earl's Stainless Perform-O-Flex™ hose, Swivel...

Billet Fuel Pump, Billet Regulator, Billet Filters, Earl's Stainless Perform-O-Flex™ hose, Swivel-Seal™ hose ends Holley EFI fuel kits are the perfect addition to your Terminator or Holley EFI kit. They are engineered using Holley fuel pumps, regulators and filters coupled with quality Earl's plumbing to provide a fuel system tailored to the needs of your Terminator EFI System. Holley EFI fuel kits provide everything needed for a complete supply fuel system for the Terminator EFI. The follo...

$801.95 $801.95 (2 variants)

HOLLEY EFI - KIT, SIDE THROT LID 105MM SILVER GM

Silver Finish- LS throttle body pattern HI-RAM 105MM Fabricated Side Mount Plenum Top for EFI Hi...

Silver Finish- LS throttle body pattern HI-RAM 105MM Fabricated Side Mount Plenum Top for EFI Hi-Ram Manifolds Holley now has fabricated aluminum plenum to options for those of us with limited room in the front of our engine bays. The 4 mm thick aluminum side mount plenum tops resemble the older Ford EFI manifolds and will allow you to mount the throttle body on the side. This will allow for easier fabrication for boosted applications or for just a different look on your Hi-Ram manifold. Fab...

$279.95 $289.95 (2 variants)

KIT, SIDE THROT LID 95MM SILVER GM

Silver Finish- LS throttle body patterns HI-RAM 95MM Fabricated Side Mount Plenum Top for EFI Hi...

Silver Finish- LS throttle body patterns HI-RAM 95MM Fabricated Side Mount Plenum Top for EFI Hi-Ram Manifolds Holley now has fabricated aluminum plenum to options for those of us with limited room in the front of our engine bays. The 4 mm thick aluminum side mount plenum tops resemble the older Ford EFI manifolds and will allow you to mount the throttle body on the side. This will allow for easier fabrication for boosted applications or for just a different look on your Hi-Ram manifold. Fab...

$297.95

HOLLEY EFI - DUAL ORING, 105MM MONO BLADE THROT...

105MM Mono-Blade Throttle Body – Dual O-Ring Holley's NEW EFI Throttle Bodies are unquestionably...

105MM Mono-Blade Throttle Body – Dual O-Ring Holley's NEW EFI Throttle Bodies are unquestionably the BIGGEST BORE - MOST FEATURE LOADED units available on the market today. Holley went back to the drawing board and built the ultimate air valves for your hotrods power plant. The New 105mm Mono-Blade throttle body is designed with a 4" V-band flange, or Dual O-Ring, perfect for the most radical turbocharged combinations. These throttle bodies are feature packed, showcasing roller bearing throt...

$615.95

HOLLEY EFI - VBAND, 105MM MONO BLADE THROTTLE BODY

105MM Mono-Blade Throttle Body – V-Band Style Holley's NEW EFI Throttle Bodies are unquestionabl...

105MM Mono-Blade Throttle Body – V-Band Style Holley's NEW EFI Throttle Bodies are unquestionably the BIGGEST BORE - MOST FEATURE LOADED units available on the market today. Holley went back to the drawing board and built the ultimate air valves for your hotrods power plant. The New 105mm Mono-Blade throttle body is designed with a 4" V-band flange, or Dual O-Ring, perfect for the most radical turbocharged combinations. These throttle bodies are feature packed, showcasing roller bearing thro...

$615.95