Due to the large size of this product, your order will be shipped via palletized freight. We kindly ask that you provide a commercial address for delivery.
If a commercial address is not available, we recommend arranging pickup from your nearest freight terminal. Please note that the classification of a commercial address is determined by our logistics provider.
If you require lift gate service, please select either a commercial address with lift gate service or a residential address with lift gate service on the checkout page when placing your order.
Orders are processed and shipped within 3 business days. Please allow an additional 1 to 7 business days for transit, depending on your location.
Thank you for your understanding and support!
We strive to ship orders the same day they are placed and paid for. However, factors such as missed shipping cut-off times, holidays, weekends, or unforeseen delays may result in your order being fulfilled within 1-2 business days. We appreciate your understanding and are committed to getting your order to you as quickly as possible. Expected delivery within 3 to 6 days. Times are for reference only and may be adjusted based on actual conditions.
Shipping Outside the Contiguous 48 States: We do not directly ship outside the 48 contiguous United States. However, we can work with your freight forwarder to accommodate your orders. You are responsible for paying all customs duties, taxes, and other additional fees applied upon export. The freight forwarder is responsible for inspecting the packages before accepting and delivering them. Once the packages are accepted by the freight forwarder, Bilt Hard is not responsible for any damage or loss of the packages.
We do not ship our products to P.O. boxes, military APO addresses, states and territories outside the contiguous U.S. (including Hawaii, Alaska, Puerto Rico, and the Virgin Islands), or countries outside of the United States.
Out-of-Stock/Back-Ordered Products Policy: If your order includes out-of-stock items, we will ship the remaining in-stock items as soon as the order is paid for. Back-ordered items will be sent to you via ground shipping at no additional charge when their stock is replenished. You can request that the order be shipped in one batch when all items are available.
Cancellation Policy: If you wish to cancel an order that has NOT been shipped, contact our customer service department at inquiry@bilthardusa.com. We will do our best to assist you in a timely fashion. Special order items and items marked as shipped cannot be canceled after the order is processed. Returned items are subject to restocking fees. If an order cannot be canceled, you will be able to return eligible items; shipping charges may apply.
Disclaimer:
1. Bilt Hard is not responsible for or liable for any delayed shipments due to events beyond our control, including natural disasters, acts of God, power and server outages, and acts of omission from carriers, transmitters, phone companies, and internet service providers.
2. We do not offer pickup service for orders valued below $1,000 USD. If your order meets this requirement and you need pickup service, please contact us immediately after placing your order.
Return Policy:
Our return policy allows you 30 days from the date of item delivery to request a return. Please note that returns are not accepted after this 30-day period.
Eligibility Criteria:
To be eligible for a return, your item must be in its original, unworn, and unused condition, including all items inside the box and in their original packaging. Customers are required to provide photos and videos of the products and boxes. Additionally, a receipt or proof of purchase is necessary.
Initiating a Return:
To start a return, please contact us at inquiry@bilthardusa.com. If your return is approved, we'll provide detailed instructions on where and how to send your package.
Important Note:
- Used items can only be returned if there are quality issues.
- Customers are responsible for processing and shipping costs for both delivery and return if they purchase the wrong product or no longer want it.
Procedure Reminder:
Ensure you request a return before sending back items. Items returned without prior authorization will not be accepted. Bilt Hard is not liable for the shipping costs incurred by customers returning packages without authorization.
Return Address: 805 SENTOUS AVE, CITY OF INDUSTRY, CA 91748-1425 US
Non-Returnable Items:
Items that fall under the following categories are non-returnable:
- Giveaways or free items
- Used items
- Items damaged due to human causes
- Products from unauthorized resellers
Defective or Damaged Products:
If the product is defective or damaged, please provide photos or videos to our customer service within 10 days of receiving the goods. We will cover the return (exchange) shipping costs. Failure to do so within 10 days or a lack of response will make the buyer responsible for any loss.
Return Process:
Upon receiving returned items, we will verify the product's condition within 2-3 business days and initiate a refund within the next 3 business days. We will notify you of the refund status. Approved refunds will be automatically processed through your original payment method. Please note that the bank or credit card company may require additional time to complete the refund.
Limited Warranty:
Bilt Hard comes with a 1-year/2-year/5-year/10-year Limited Warranty covering defects in materials and workmanship under normal use. The warranty is only applicable to original purchasers and starts on the purchase date. It does not extend if the product is repaired or replaced.
The Warranty does not cover damage due to improper use, failure to follow instructions, unauthorized repair, external causes beyond our control, or force majeure events (e.g., fire, earthquake, lightning, water damage).
If you have any questions, please contact us at inquiry@bilthardusa.com.
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 Pattern | 7.72 L x 4.06 W-3.39 W in. |
Weight | 82.9 pounds | Dimensions | 18.3''x14.4''x17.5'' |
Manual | Download | Power Source | Gas Powered |
Experience Unleashed Power with Our 15HP Engine!
POWERFUL & RELIABLE ENGINE: This 420cc 4-stroke horizontal shaft gas engine delivers up to 15 HP, with a maximum torque of 18.45 ft-lbs at 2,500 RPM and a top speed of 3,800 RPM. It features a 1.2-gallon fuel tank and is engineered to meet and exceed industrial-grade quality standards for dependable, long-lasting performance. Note: Engine ships dry—please add gasoline and engine oil (not included) before starting.
SHAFT & MOUNTING SPECIFICATIONS: The crankshaft measures 1" in diameter and 3.48" in length, with a 3/8"-24 UNF tapped end and a 1/4" keyway. Mounting pattern: 7.72" (L) x 3.39" (W) – 4.06" (W). The engine runs smoothly and quietly, and supports Torch F6TC spark plugs with a gap of 0.027"–0.031". Compatible with unleaded gasoline (minimum 87+ octane, ethanol content <10% recommended).
SAFE & VERSATILE OPERATION: Equipped with a forced air-cooling and splash lubrication system to maintain optimal operating temperature and safety during extended use. A built-in low oil shutdown sensor protects the engine from damage due to insufficient lubrication. Ideal for a wide range of equipment including cement mixers, compressors, log splitters, water pumps, tillers, mowers, vacuums, and more.
EXCELLENT REPLACEMENT OPTION: This engine is a reliable replacement for popular models such as Honda GX340/GX390 (389cc), Briggs & Stratton GX340/GX390 (389cc), Kohler CH440/ECH440/ECH440LE (429cc), and Yamaha MZ360/MX360/MX400 (357–402cc).
IMPORTANT NOTE: EPA compliant. Each engine is oil-tested before packaging to ensure quality, so you may notice slight oil residue. Rest assured, your engine is 100% brand new and ready for use once properly fueled and oiled.

BILT HARD 420cc OHV Gas Engine
Durable 420cc OHV gas engine with heavy-duty cast iron cylinder for long life. Easy-start controls, low oil shutdown protection, and full EPA compliance. Perfect for garden tractors, golf cart conversions, airboats, wood chippers, log splitters, and more.
Note: Not recommended for generator conversions



Electric Start
Just turn the key, you could easily get the engine start ( also with a recoil start, give you a double start secure)

3/8 in. Horizontal Shaft
Counterclockwise PTO driveshaft (3/8") with durable steel ball bearings. Horizontal shaft fits most standard engine setups.

Control the Air Volume
For cold starts, partially close the air intake to enrich the fuel mixture for easier ignition.