Walker 18347 Exhaust Muffler
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Walker
 SoundFX Direct Fit

Walker 18347 Exhaust Muffler

Brand Walker 18347
Universal Or Specific Fit Specific
Shape Oval
Grade Type Regular
Inlet Inside Diameter 2.5
Body Width 9.75
Inlet Quantity 1
Outlet Inside Diameter 2
Reversible No
Tunable No
Overall Length 31.5
Body Height 4.25
Body Length 25
Body Material Steel
Finish Aluminized
Inlet 1 Inside Diameter 2.5
Inlet 1 Type Pipe connection
Inlet Configuration Offset
Inlet Offset 2.875
Inlet Type Pipe connection
Muffler Type Combination
Outlet 1 Inside Diameter 2
Outlet 1 Type Pipe connection
Outlet 2 Inside Diameter 2
Outlet 2 Type Pipe connection
Outlet Configuration Offset
Outlet Quantity 2
Outlet Type Pipe connection
Product line SoundFX Direct Fit
Fits Ford · 89 vehicles

Direct-fit design. Installs as a specific-fit exhaust muffler with no guesswork.

Aluminized steel. Helps resist corrosion for longer service life than low-carbon steel.

Mechanical interior joints. Spun-locked heads add durability and a quality finish.

Cross-references AP Exhaust 700270 and 700433 for the same application. See all 2.

$98.43Free shipping
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Walker SoundFX Direct Fit Muffler

Walker SoundFX Direct Fit muffler Part Number 18347 is a specific-fit exhaust muffler built for select Ford heavy-duty truck applications. It uses aluminized steel construction for improved service life versus low-carbon steel and is shaped as an oval combination muffler with offset inlet and dual offset outlets.

For Ford F-250 and Ford F-350 exhaust repair, this Walker SoundFX muffler is aimed at restoring proper exhaust routing and maintaining a controlled sound profile. The direct-fit design supports OE-style replacement on vehicles with dual outlets, including 1988-1997 Ford F-250 HD and Ford F-350 applications listed below.

Key Features

  • Specific-fit Walker exhaust muffler for select Ford truck applications
  • Aluminized steel body for longer service life than low-carbon steel
  • Oval combination muffler design
  • Offset 2.5-inch inlet with dual 2-inch outlets
  • Mechanical interior joints and spun-locked heads for added durability
  • Direct-fit layout for exhaust system replacement on compatible Ford F-250 and Ford F-350 models
  • Walker SoundFX Direct Fit line focused on quality appearance and controlled acoustics

Product Details

Walker SoundFX Direct Fit Part Number 18347 measures 31.5 inches overall, with a 25-inch body length, 9.75-inch body width, and 4.25-inch body height. The muffler is made from steel with an aluminized finish and uses pipe connections for the inlet and outlets. Its offset inlet configuration and dual outlet layout match the listed Ford truck exhaust applications, including 1988-1997 Ford F-250 and Ford F-350 models with dual outlets. This part cross-references AP Exhaust 700270 and 700433 for the same application.

Common Exhaust Problems It Can Address

  • Rust-through or corrosion in the original muffler body
  • Exhaust noise increase from a damaged internal baffle or shell
  • Poor exhaust routing on a worn direct-fit replacement system
  • Fitment issues on Ford F-250 and Ford F-350 dual-outlet exhaust repairs
  • Replacement needs after welded assembly service work

Installation Notes

  • Compatible With 1997 Ford F-250 HD, N/A, over 8500 lb GVW; with dual outlets; if welded assembly, replace all required parts; SoundFX Direct Fit
  • Compatible With 1996-1997 Ford F-350, N/A, with dual outlets; if welded assembly, replace all required parts; SoundFX Direct Fit
  • Compatible With 1988-1994 Ford F-350, N/A, with dual outlets; if welded assembly, replace all required parts; SoundFX Direct Fit
  • Compatible With 1988-1996 Ford F-250, N/A, over 8500 lb GVW; with dual outlets; if welded assembly, replace all required parts; SoundFX Direct Fit
  • Compatible With 1994-1995 Ford F-350, N/A, with dual outlets; after 02/1988; if welded assembly, replace all required parts; SoundFX Direct Fit
  • Compatible With 1988-1992 Ford F-350, N/A, with dual outlets; after 02/1988; if welded assembly, replace all required parts; SoundFX Direct Fit
  • Compatible With 1988-1993 Ford F-350, N/A, with dual outlets; except transmission codes E4OD; after 02/1988; if welded assembly, replace all required parts; SoundFX Direct Fit
  • Compatible With 1988-1993 Ford F-350, N/A, with dual outlets; E4OD transmission; after 02/1988; if welded assembly, replace all required parts; SoundFX Direct Fit
  • Compatible With 1988 Ford F-250, N/A, over 8500 lb GVW; with dual outlets; after 02/1988; if welded assembly, replace all required parts; SoundFX Direct Fit

Verify inlet and outlet alignment before welding or clamping. Because this muffler is specific fit, confirm the vehicle’s exhaust configuration, including dual outlets and any transmission or build-date notes, before installation. For Ford F-250 and Ford F-350 exhaust service, Part Number 18347 should be matched to the exact application listed above.

Quality Assurance

Walker SoundFX Direct Fit mufflers are built with aluminized steel, mechanical interior joints, and spun-locked heads to support durability in exhaust service. The SoundFX Direct Fit line is positioned for OE-style appearance and controlled acoustics in direct replacement applications.

Related reading

This part fits 89 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelDrive TypeLitersCylindersWheel BasePositionNotes
1997FordF-250 HD—5.8LV8155.0"N/AOver 8500 (lb) GVW; with Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1997FordF-250 HD—5.8LV8133.0"N/AOver 8500 (lb) GVW; with Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1997FordF-350—5.8LV8133.0"N/Awith Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1997FordF-350—5.8LV8155.0"N/Awith Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1996FordF-250—5.8LV8155.0"N/AOver 8500 (lb) GVW; with Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1996FordF-250—5.8LV8133.0"N/AOver 8500 (lb) GVW; with Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1996FordF-350—5.8LV8133.0"N/Awith Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1996FordF-350—5.8LV8155.0"N/Awith Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1995FordF-250—5.8LV8155.0"N/AOver 8500 (lb) GVW; with Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1995FordF-250—5.8LV8133.0"N/AOver 8500 (lb) GVW; with Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1995FordF-350—5.8LV8133.0"N/Awith Dual Outlets; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1995FordF-350—5.8LV8168.4"N/Awith Dual Outlets; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1994FordF-250—5.8LV8155.0"N/AOver 8500 (lb) GVW; with Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1994FordF-250—5.8LV8133.0"N/AOver 8500 (lb) GVW; with Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1994FordF-350RWD5.8LV8133.0"N/Awith Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1994FordF-350—5.8LV8133.0"N/Awith Dual Outlets; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1994FordF-350—5.8LV8168.4"N/Awith Dual Outlets; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1993FordF-250—5.8LV8155.0"N/AOver 8500 (lb) GVW; with Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1993FordF-250—5.8LV8133.0"N/AOver 8500 (lb) GVW; with Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1993FordF-350RWD5.8LV8133.0"N/Awith Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1993FordF-350—5.8LV8168.4"N/Awith Dual Outlets; Except Transmission Codes E4OD; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1993FordF-350—5.8LV8133.0"N/Awith Dual Outlets; E4OD Transmission; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1993FordF-350—5.8LV8133.0"N/Awith Dual Outlets; Except Transmission Codes E4OD; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1993FordF-350—5.8LV8168.4"N/Awith Dual Outlets; E4OD Transmission; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1992FordF-250—5.8LV8155.0"N/AOver 8500 (lb) GVW; with Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1992FordF-250—5.8LV8133.0"N/AOver 8500 (lb) GVW; with Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1992FordF-250—7.5LV8155.0"N/AOver 8500 (lb) GVW; with Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1992FordF-250—7.5LV8133.0"N/AOver 8500 (lb) GVW; with Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1992FordF-350RWD7.5LV8155.0"N/Awith Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1992FordF-350RWD5.8LV8133.0"N/Awith Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1992FordF-350RWD7.5LV8133.0"N/Awith Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1992FordF-350—7.5LV8168.4"N/Awith Dual Outlets; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1992FordF-350—7.5LV8133.0"N/Awith Dual Outlets; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1992FordF-350—5.8LV8168.4"N/Awith Dual Outlets; Except Transmission Codes E4OD; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1992FordF-350—5.8LV8133.0"N/Awith Dual Outlets; E4OD Transmission; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1992FordF-350—5.8LV8133.0"N/Awith Dual Outlets; Except Transmission Codes E4OD; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1992FordF-350—5.8LV8168.4"N/Awith Dual Outlets; E4OD Transmission; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1991FordF-250—5.8LV8155.0"N/AOver 8500 (lb) GVW; with Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1991FordF-250—5.8LV8133.0"N/AOver 8500 (lb) GVW; with Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1991FordF-250—7.5LV8155.0"N/AOver 8500 (lb) GVW; with Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1991FordF-250—7.5LV8133.0"N/AOver 8500 (lb) GVW; with Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1991FordF-350RWD7.5LV8155.0"N/Awith Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1991FordF-350RWD5.8LV8133.0"N/Awith Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1991FordF-350RWD7.5LV8133.0"N/Awith Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1991FordF-350—7.5LV8168.4"N/Awith Dual Outlets; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1991FordF-350—7.5LV8133.0"N/Awith Dual Outlets; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1991FordF-350—5.8LV8168.4"N/Awith Dual Outlets; Except Transmission Codes E4OD; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1991FordF-350—5.8LV8133.0"N/Awith Dual Outlets; E4OD Transmission; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1991FordF-350—5.8LV8133.0"N/Awith Dual Outlets; Except Transmission Codes E4OD; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1991FordF-350—5.8LV8168.4"N/Awith Dual Outlets; E4OD Transmission; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1990FordF-250—5.8LV8155.0"N/AOver 8500 (lb) GVW; with Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1990FordF-250—5.8LV8133.0"N/AOver 8500 (lb) GVW; with Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1990FordF-250—7.5LV8155.0"N/AOver 8500 (lb) GVW; with Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1990FordF-250—7.5LV8133.0"N/AOver 8500 (lb) GVW; with Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1990FordF-350RWD7.5LV8155.0"N/Awith Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1990FordF-350RWD5.8LV8133.0"N/Awith Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1990FordF-350RWD7.5LV8133.0"N/Awith Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1990FordF-350—7.5LV8168.4"N/Awith Dual Outlets; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1990FordF-350—7.5LV8133.0"N/Awith Dual Outlets; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1990FordF-350—5.8LV8168.4"N/Awith Dual Outlets; Except Transmission Codes E4OD; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1990FordF-350—5.8LV8133.0"N/Awith Dual Outlets; E4OD Transmission; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1990FordF-350—5.8LV8133.0"N/Awith Dual Outlets; Except Transmission Codes E4OD; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1990FordF-350—5.8LV8168.4"N/Awith Dual Outlets; E4OD Transmission; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1989FordF-250—5.8LV8155.0"N/AOver 8500 (lb) GVW; with Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1989FordF-250—5.8LV8133.0"N/AOver 8500 (lb) GVW; with Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1989FordF-250—7.5LV8155.0"N/AOver 8500 (lb) GVW; with Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1989FordF-250—7.5LV8133.0"N/AOver 8500 (lb) GVW; with Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1989FordF-350RWD7.5LV8155.0"N/Awith Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1989FordF-350RWD5.8LV8133.0"N/Awith Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1989FordF-350RWD7.5LV8133.0"N/Awith Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1989FordF-350—7.5LV8168.4"N/Awith Dual Outlets; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1989FordF-350—7.5LV8133.0"N/Awith Dual Outlets; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1989FordF-350—5.8LV8168.4"N/Awith Dual Outlets; Except Transmission Codes E4OD; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1989FordF-350—5.8LV8133.0"N/Awith Dual Outlets; E4OD Transmission; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1989FordF-350—5.8LV8133.0"N/Awith Dual Outlets; Except Transmission Codes E4OD; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1989FordF-350—5.8LV8168.4"N/Awith Dual Outlets; E4OD Transmission; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1988FordF-250—5.8LV8155.0"N/AOver 8500 (lb) GVW; with Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1988FordF-250—5.8LV8133.0"N/AOver 8500 (lb) GVW; with Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1988FordF-250—7.5LV8155.0"N/AOver 8500 (lb) GVW; with Dual Outlets; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1988FordF-250—7.5LV8133.0"N/AOver 8500 (lb) GVW; with Dual Outlets; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1988FordF-350RWD7.5LV8133.0"N/Awith Dual Outlets; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1988FordF-350RWD7.5LV8155.0"N/Awith Dual Outlets; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1988FordF-350RWD5.8LV8133.0"N/Awith Dual Outlets; If welded assembly, replace all required parts; SoundFX Direct Fit
1988FordF-350—7.5LV8168.4"N/Awith Dual Outlets; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1988FordF-350—7.5LV8133.0"N/Awith Dual Outlets; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1988FordF-350—5.8LV8168.4"N/Awith Dual Outlets; Except Transmission Codes E4OD; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1988FordF-350—5.8LV8133.0"N/Awith Dual Outlets; E4OD Transmission; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1988FordF-350—5.8LV8133.0"N/Awith Dual Outlets; Except Transmission Codes E4OD; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
1988FordF-350—5.8LV8168.4"N/Awith Dual Outlets; E4OD Transmission; After 02/1988; If welded assembly, replace all required parts; SoundFX Direct Fit
Directly replaces or cross-references 2 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
AP Exhaust — 700270700433