1998-Up Overaxles & Tailpipes
Muffler (Part #FRL400STP)
Need a reliable front pipe to connect the muffler to the overaxle section on your Freightliner exhaust system? United Muffler Corp. offers the FRL400STP Muffler to Overaxle Pipe, designed to route from the muffler to the front of the overaxle pipe with dependable fitment, durability, and performance for demanding commercial truck applications. Built for repair shops, fleets, and truck owners who need quality exhaust components they can trust, this pipe helps keep the system properly aligned and ready for daily service. Contact United Muffler Corp. today to confirm fitment and order the FRL400STP Muffler to Overaxle Pipe for your Freightliner application.
Right Side Bumper Exit Overaxles
Spring suspension (Part #FRLOA)
Need the correct right-side bumper exit overaxle pipe for a Freightliner with spring suspension? United Muffler Corp. offers the FRLOA, identified as item 2A, designed to fit applications with side and rear fuel tanks while supporting proper exhaust routing, secure fitment, and dependable performance. Built for demanding commercial truck use, this overaxle pipe is a practical replacement choice for repair shops, fleets, and truck owners who need quality exhaust components that keep the system aligned and ready for service. Contact United Muffler Corp. today to confirm fitment and order the FRLOA Spring Suspension Overaxle Pipe for your Freightliner application.
Air-ride suspension (Part #FRLOAAS)
Need the correct right-side bumper exit overaxle pipe for a Freightliner with air-ride suspension? United Muffler Corp. offers the FRLOAAS, identified as item 2B, designed to fit applications with side and rear fuel tanks while helping maintain proper exhaust routing, dependable fitment, and long-term system stability. Built for demanding commercial truck service, this overaxle pipe is a reliable replacement choice for repair shops, fleets, and truck owners who need quality exhaust components that perform with confidence. Contact United Muffler Corp. today to confirm fitment and order the FRLOAAS Air-Ride Suspension Overaxle Pipe for your Freightliner application.
Air suspension(Part #FRLOAAS149)
Need a dependable overaxle pipe for a Freightliner with air suspension and a flat spot configuration? United Muffler Corp. offers the FRLOAAS149, identified as item 2C, as a practical replacement option designed to support proper exhaust routing, reliable fitment, and long-lasting performance in demanding commercial truck applications. Built for repair shops, fleets, and truck owners who need the correct exhaust component for their setup, this pipe helps keep the system aligned, secure, and ready for daily service. Contact United Muffler Corp. today to confirm fitment and order the FRLOAAS149 Air-Suspension Overaxle Pipe for your Freightliner application.
Left Side Bumper Exit Overaxles
Rear fuel tank (Part #FRLOARFT)
Need the correct left-side bumper exit overaxle pipe for a Freightliner with a rear fuel tank? United Muffler Corp. offers the FRLOARFT, identified as item 2D, as a dependable replacement option designed to support proper exhaust routing, secure fitment, and reliable performance in commercial truck applications. Built for repair shops, fleets, and truck owners who need quality exhaust components matched to the right configuration, this overaxle pipe helps keep the exhaust system aligned and ready for daily service. Contact United Muffler Corp. today to confirm fitment and order the FRLOARFT Rear Fuel Tank Overaxle Pipe for your Freightliner application.
Rear fuel tank (Part #FRLOARFTAS)
Need the correct left-side bumper exit overaxle pipe for a Freightliner with a rear fuel tank and air-ride suspension? United Muffler Corp. offers the FRLOARFTAS, identified as item 2E, as a dependable replacement option designed to support proper exhaust routing, reliable fitment, and long-term durability in demanding commercial truck applications. Built for repair shops, fleets, and truck owners who need the right part for the right configuration, this overaxle pipe helps keep the exhaust system aligned, secure, and ready for daily service. Contact United Muffler Corp. today to confirm fitment and order the FRLOARFTAS Rear Fuel Tank & Air-Ride Suspension Overaxle Pipe for your Freightliner application.
Tailpipe(Part #FRLTP)
Need a versatile Freightliner tailpipe that works for either side of the exhaust system? United Muffler Corp. offers the FRLTP, identified as item 3, designed to flip for right-side or left-side use, making it a practical replacement option for repair shops, fleets, and truck owners who need flexible fitment and dependable performance. Built to support proper exhaust routing, durable service, and a clean bumper-exit configuration, this tailpipe helps keep Freightliner exhaust systems properly aligned and ready for daily operation. Contact United Muffler Corp. today to confirm fitment and order the FRLTP tailpipe for your Freightliner application.
Tailpipe Extension
Tailpipe extension(Part #FRLTPEXT537)
Need a dependable tailpipe extension for your Freightliner exhaust system? United Muffler Corp. offers the FRLTPEXT537, featuring an 18″ offset, 32″ length, and matching O.E. #04-20537-000, making it a practical replacement option for maintaining proper exhaust routing and bumper-exit positioning. Built for demanding commercial truck applications, this extension helps repair shops, fleets, and truck owners complete the exhaust system with reliable fitment, durable performance, and confidence. Contact United Muffler Corp. today to confirm fitment and order the FRLTPEXT537 tailpipe extension for your Freightliner application.
Tailpipe Extension(Part #FRLTPUB)
Need a reliable under-bumper tailpipe extension for your Freightliner exhaust system? United Muffler Corp. offers the FRLTPUB Under Bumper Tailpipe Extension, designed to help complete the exhaust routing with proper positioning, dependable fitment, and durable performance for demanding commercial truck applications. Built for repair shops, fleets, and truck owners who need quality replacement components, this extension helps keep the exhaust system aligned, secure, and finished correctly. Contact United Muffler Corp. today to confirm availability and order the FRLTPUB Under Bumper Tailpipe Extension for your Freightliner application.
Tailpipe extension(Part #FRLTPBT)
Need a dependable thru-bumper tailpipe extension for a Freightliner with a Bluebird body configuration? United Muffler Corp. offers the FRLTPBT Bluebird Body Thru Bumper Tailpipe Extension, designed to help complete the exhaust system with proper routing, secure fitment, and durable performance in demanding commercial truck and bus applications. Built for repair shops, fleets, and vehicle owners who need the correct replacement component for a clean, reliable exhaust exit, this extension helps keep the system properly aligned and ready for daily service. Contact United Muffler Corp. today to confirm fitment and order the FRLTPBT Bluebird Body Thru Bumper Tailpipe Extension for your application.
| Description | 1 – Muffler to Overaxle Pipe | 2 – Overaxle | 3 – Tail Pipe | 3 – Tail Pipe 72 & 77 Passenger |
|---|---|---|---|---|
| Part # | FRL400STP | 2A – FRLOA (Spring Suspension) | FRLTP | FRLTP77 |
| Part # | FRL400STP |
2B – FRLOAAS (Rear Fuel Tank) (Air-Ride Suspension) |
FRLTP | FRLTP77 |
| Part # | FRL400STP | 2C – FRLOAAS149 | FRLTP | FRLTP77 |
| Part # | FRL400STP | 2D – FRLOARFT (Rear Fuel Tank) | FRLTP | FRLTP77 |
| Part # | FRL400STP |
2E – FRLOARFTAS (Rear Fuel Tank) (Air-Ride Suspension) |
FRLTP | FRLTP77 |