40.0 Gross HP* EFI - Marine

40.0 Gross HP* EFI - Marine


This Vanguard BIG BLOCK™ V-Twin EFI engine delivers optimized performance for even the most demanding marine applications.

  • Designed with debris- and air- management features that enhance durability and performance, plus an oil system that improves lubrication, maximizes engine life and extends oil change intervals.
  • Backed by Vanguard’s 3-Year Commercial Warranty.


Horsepower (HP)


Displacement (cc)


No. of Cylinders


Fuel Type


Heavy-Duty Cylinder and Sump

Engine block designed to provide superior durability.

Vanguard EFI

Optimizes fuel injection and spark timing so the EFI engine delivers significant fuel savings, greater efficiency, easier starting and higher productivity.

High Pressure Fuel Pump Module

Alcohol & Stale Fuel Resistance.

Service Solution

Suite of support and diagnostic tools allows for minimizing potential downtime.

V-Twin OHV Technology

Superior balance, low vibration, lower emissions, improved valve life, better fuel economy and higher HP/Weight.

Electronic Ignition

Quick, dependable, starts with no maintenance required

Industrial Grade Solenoid Shift Starter

Quick reliable starts.

Electric Control Module (ECU)

Allows for altitude compensation and optimized starting.

Dura-Bore Cast Iron Cylinder Sleeve

Withstands wear while providing improved oil control.

Dynamically Balanced Crankshaft

Minimizes engine noise and vibration.

Engine Warranty

Three year commercial engine warranty** for all applications.


Only 2 products can be compared at once. Please remove one of your selections to compare this product.

Only 3 products can be compared at once. Please remove one of your selections to compare this product.

At least one product must be displayed. Please select another option to remove this product

HP (gross) *
Engine Displacement (cc)
Engine Configuration
Bore (in)
Stroke (in)
Weight (lbs)
Oil Capacity (oz)
Compression Ratio
Air Cleaner
Low Profile Air Cleaner
Ignition System
Computer Controlled Battery Ignition
Lubrication System
Full Pressure Lubrication System with Oil Cleaner
Length (in)
Width (in)
Height (in)
Certified Power Rating
Commercial Engine Warranty**
3 Year Commercial Limited

*All power levels are stated horsepower per SAE J1940 as rated by Briggs & Stratton.
**See operator's manual or dealer for complete warranty details.


Download the operator's manual or illustrated parts list for your Vanguard™ engine by searching your engine model number.

Find Manuals >

Tips & Troubleshooting

Have a question? Search our Frequently Asked Questions to find answers related to model specifications, routine maintenance, repair or troubleshooting.

Search FAQs >

Dealer Locator

World class parts delivery, industry-leading global warranties and unparalleled service & training keeps your equipment out of the shop and on the jobsite.

Find a Dealer >

Commercial Limited Warranty

Three-year commercial engine warranty for all applications. See operator's manual or dealer for complete warranty details.

Learn More >


Key Switch
Alternators (20 & 20-50 amp)
Oil Pressure Switch
Straight Keyed Cranks (1-1/8" & 1-7/16" Diameters)
Stainless Steel Performance Muffler
High Speed 4750rpm Package (Marine & Utility Vehicles Only)
Direct Throttle Control
Tach/Hour Meter with Check Engine Light
Low Idle Speed Control
Spline Crankshaft

Product Literature

Get more detailed information on what you can expect from Vanguard® and our BIG BLOCK™ V-Twin engines by downloading our literature here.

Learn more about Vanguard® EFI & ETC Technology and how it works by downloading our literature here.

Email Newsletter Sign Up