Muffler and 45-Degree Manifold with Bolts & Gaskets for Predator 13HP 420cc Engines (60340, 60349, 69736) for DuroMax 16HP/18HP XP16HPE XP18HPE Engines

High Quality Brand New Muffler With Gasket Set Fits Harbor Freight Predator 13HP 420cc 60340 60349 69736 Gas Engine

• For the Predator 420cc engine, there are two manifold options: a 45-degree and a 90-degree angle. Our manifold is the 45-degree type, compatible with most 420cc engines. Please check your OEM manifold angle and review the reference photos on our product page before ordering.

High Quality Brand New Muffler With Gasket Set Fits DuroMax 16HP XP16HPE 18HP XP18HPE Electric Start Gas Engine

• For the Duromax engine, there are two manifold options: a 45-degree and a 90-degree angle. Our manifold is the 45-degree type. Please check your OEM manifold angle and review the reference photos on our product page before ordering.

Please Note: Some equipment may require a deflector on the muffler to redirect heat. Please send us an email if you need a deflector, or check your OEM muffler design to confirm if one is needed.

1. Manifold Options: The Predator 420cc engine has two manifold options—one with a 45-degree angle and another with a 90-degree angle. This listing is for the 45-degree version. Please verify your engine’s OEM manifold angle and review the reference photos on our product detail page before ordering.
2. Noise Reduction: Our muffler is designed to reduce engine noise to the same level as the OEM part. It serves as a direct replacement, ensuring consistent noise reduction performance.
3. Installation Note: Before installing the muffler on the engine, attach the manifold to the muffler head. Ensure the muffler has completely cooled before handling.

Package includes: 1X Engine Muffler & Manifold & Gasket Set

If you are not sure, please send us email to support@sigmapowers.com and we will get back to you asap.

Orders placed by 2:00 PM ET on a business day are typically shipped the same business day. Orders placed after 2:00 PM ET, or on weekends or holidays, are typically shipped the next business day.

We primarily use USPS, FedEx, and UPS. Most orders are shipped using standard carrier services, and estimated delivery times vary depending on the destination and shipping method selected.

Standard shipping rates generally apply to addresses within the contiguous 48 U.S. states. Additional shipping charges may apply to orders shipped to Alaska, Hawaii, Puerto Rico, Guam, and other U.S. territories.

Expedited shipping options, including Overnight and 2-Day shipping, may be available at checkout for an additional charge.

1. How to Start a Return
Please contact us by email within 30 days of receiving your order before returning any item. We will confirm your eligibility and send instructions. Returns sent without prior contact may be delayed or refused.

2. Defective, Damaged, or Incorrect Items
If your item arrives defective or damaged, or if we sent you the wrong item, please email us with your order number and photos showing the issue.
Once the claim is reviewed and approved, we will cover the return shipping cost, if a return is required, and either provide a replacement or issue a full refund.

3. Non-Defective Returns
If you ordered the wrong part, no longer need the item, or simply changed your mind, the item must be unused, uninstalled, and in resalable condition. Used or installed items are generally not eligible for return.

• You are responsible for the return shipping cost.
• A 15% restocking fee applies, which may be waived at our discretion.
• Original shipping and handling charges are non-refundable.

4. Refunds
Refunds are normally issued within 2 business days after the returned item is received and inspected.
Refunds will be issued to the original payment method. Depending on your bank or payment provider, it may take several additional business days for the refund to appear in your account.