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Exhaust› Mufflers and Resonators

AP Exhaust

AP Exhaust Muffler

Name: AP Exhaust Muffler
Brand: AP Exhaust
SKU: 3751

$497.95

SKU: 3751

Free Shipping over $200

$100 Minimum Order

Non-Returnable Item

DIY PRO SHOP

Moderate — 2–4 hours

Description

The AP Exhaust 3751 is a steel muffler engineered to be a direct replacement or upgrade for exhaust systems. It features a 1.75-inch inlet and a 1.75-inch outlet, ensuring compatibility with many exhaust configurations. The inlet is positioned on the right center of the muffler body. Constructed from aluminized steel, this muffler offers enhanced resistance to corrosion, contributing to its longevity. The material choice provides a balance between durability and performance for everyday driving. The muffler body itself is made of steel, with an aluminized coating for superior protection against the elements. It does not come with a heat shield attached, which may be a consideration depending on the specific installation requirements and proximity to other components.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

Brand	AP Exhaust
Part Number	3751
Category	Exhaust

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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