AP Exhaust 700345 Exhaust Muffler - Rear

AP Exhaust 700345 Exhaust Muffler Overview

The AP Exhaust 700345 exhaust muffler is designed for reliable performance and durability in select GM and Isuzu SUVs. Engineered with aluminized steel and a baffled muffler configuration, this muffler offers OE comparable sound levels and a precise fit for vehicles like the Chevrolet Trailblazer and GMC Envoy.

• Constructed from aluminized steel for corrosion resistance
• Baffled muffler type for controlled exhaust sound
• Oval-shaped body measuring 13" length, 9" width, and 7" height
• Single 2.75" inlet pipe located center lower
• Single 2.5" spout outlet positioned at right center
• Overall length of 21.88" with C muffler configuration
• Compatible with Buick, Chevrolet, GMC, Isuzu, and Oldsmobile SUVs

Detailed Product Description

The AP Exhaust 700345 muffler features a durable aluminized steel body designed to withstand typical road conditions and resist rust. Its baffled design helps reduce exhaust noise to an OE comparable level, maintaining a balance between sound suppression and engine performance. The muffler’s oval shape and specific dimensions (13" body length, 9" width, and 7" height) ensure a proper fit within the exhaust system of compatible vehicles.

The inlet pipe, measuring 2.75" inside diameter, is positioned at the center lower part of the muffler, while the outlet spout, with a 2.5" outside diameter, is located at the right center. This configuration supports efficient exhaust flow and helps maintain engine efficiency. The overall length of 21.88" and the C muffler configuration are designed to match the exhaust layout of models such as the Chevrolet Trailblazer, GMC Envoy, Buick Rainier, Isuzu Ascender, and Oldsmobile Bravada.

Compatible Vehicles and Applications

• Buick Rainier
• Chevrolet Trailblazer
• GMC Envoy
• Isuzu Ascender
• Oldsmobile Bravada

This muffler is ideal for replacing worn or damaged exhaust components on these SUVs, restoring proper exhaust flow and sound control.

Common Issues Addressed by AP Exhaust 700345

• Excessive exhaust noise due to muffler damage or wear
• Corrosion or rust compromising muffler integrity
• Reduced engine performance from exhaust leaks
• Failed emissions tests related to exhaust system issues
• Fitment problems with aftermarket mufflers not designed for specific models

Installation Notes and Tips

Ensure the vehicle is securely lifted and cooled before beginning installation. The AP Exhaust 700345 muffler is designed for direct replacement and should align with existing exhaust pipes using the 2.75" inlet and 2.5" outlet diameters. Verify inlet and outlet locations match the vehicle’s exhaust layout (center lower inlet and right center outlet) to avoid fitment issues. Professional installation is recommended for optimal sealing and performance.

Quality Assurance and Warranty

AP Exhaust manufactures this muffler to meet regular grade standards, providing reliable durability and sound control. While specific warranty details are not provided, AP Exhaust products typically adhere to industry quality standards for OEM replacement parts. For additional warranty information, consult the product documentation or manufacturer directly.