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BILT HARD

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BILT HARD 420cc 15HP Gas Engine with Electric Start – 4-Stroke OHV Horizontal Shaft, Compatible Replacement for Honda GX390, Briggs & Stratton GX390, Kohler CH440, and Yamaha MZ/MX Series

Name: BILT HARD BILT HARD 420cc 15HP Gas Engine with Electric Start – 4-Stroke OHV Horizontal Shaft, Compatible Replacement for Honda GX390, Briggs & Stratton GX390, Kohler CH440, and Yamaha MZ/MX Series - BILT HARD 420cc 15HP Gas Engine with Electric Start – 4-Stroke OHV Horizontal Shaft, Compatible Replacement for Honda GX390, Briggs & Stratton GX390, Kohler CH440, and Yamaha MZ/MX Series
Brand: BILT HARD
SKU: 47050174267694
Price: 429.99 USD
Availability: InStock
Rating: 5 (4 reviews)

4.5 (1,234)

Sold 100+ last 30 days

20% off first order

$429.99

Quantity

Color

Black

Quantity

Description

420cc 15HP Gas Engine with Electric Start Maximum Torque 18.45ft.lbs @2500RPM Compression Ratio 8.2:1 Bore × Stroke 3.54 in x 2.6 in Speed (max) 3800 RPM Shaft length 3.48 in. Shaft Diameter 1 in. PTO Shaft Keyway 1/4 in. Mounting ...

Reviews

5.0

4 ratings

Good quality, shipped without damage, expedient.

Anonymous · January 15, 2026

Fast shipping, same aftermarket parts as Predator/ Honda!

Super fast shipping, tore down to build for a go kart and it has all the same specs as the GX390/ Predator 420!

Gage · July 13, 2025

420cc 15 HP Gas Engine

Receive 10 days ago damaged, broken exhaust manifold. Contacted Customer Service. I received quick response. Waiting for replacement part. The engine looks great. I can't review until I receive part. Tracking for shipment would help

Thomas · May 8, 2025

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BILT HARD 420cc 15HP Gas Engine with Electric Start – 4-Stroke OHV Horizontal Shaft, Compatible Replacement for Honda GX390, Briggs & Stratton GX390, Kohler CH440, and Yamaha MZ/MX Series

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