Product Description
The WALKER 18588 SoundFX® Exhaust Muffler is designed as a premium direct-fit replacement for Ford Ranger and Mazda B-Series trucks. Constructed from 100% aluminized steel, this muffler delivers greater corrosion resistance and extended durability compared to standard low-carbon steel options.
Mechanical interior joints, internal partitions, and spun-locked heads allow the muffler to expand and contract with temperature changes, reducing distortion and reinforcing long-term performance. OE-style louvered tubes lower radiated noise, producing a refined, factory-like exhaust tone rather than the harsher output of straight perforated tubes.
Engineered as an easy, bolt-on solution with OE-style pipe connections and routings, the SoundFX® 18588 provides dependable performance, longevity, and quiet operation—ideal for maintaining the original driving character of Ford and Mazda compact trucks.
Key Features
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Aluminized Steel Construction enhances corrosion resistance and longevity
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Bolt-On Direct-Fit Replacement with OE-style connections—no welding required
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Thermal-Durable Design with internal partitions and mechanically joined tubes
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OE-Style Acoustic Design using louvered tubes for factory-like sound
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Internal Drainage System helps reduce moisture buildup and extend service life
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Engineered & Tested for durability and extended muffler life
Technical Specifications
| Specification |
Detail |
| Shape |
Oval |
| Finish |
Aluminized |
| Body Material |
Steel |
| Inlet Type |
Pipe Connection |
| Outlet Type |
Pipe Connection |
| Inlet Inside Diameter |
2.000 in |
| Outlet Inside Diameter |
2.000 in |
| Inlet Location |
Offset |
| Inlet Quantity |
1 |
| Outlet Location |
Center |
| Outlet Quantity |
1 |
| Body Height |
4.250 in |
| Body Length |
21.000 in |
| Body Width |
9.750 in |
| Overall Length |
25.000 in |
| Inlet Offset |
2.875 in |
| Reversible |
No |
| Tunable |
No |
| Universal or Specific Fit |
Specific |
| Grade Type |
Premium |
Vehicle Compatibility
(All applications listed require one muffler per vehicle and are designed as direct-fit replacements.)
Ford – Ranger
2.5L L4 (153 cid)
4.0L V6 (245 cid)
2.3L L4 (140 cid)
3.0L V6 (2986cc / 182 cid)
Mazda – B-Series Trucks
B2300 – 2.3L L4 (140 cid)
B2500 – 2.5L L4 (2492cc)
B3000 – 3.0L V6 (2986cc / 182 cid)
B4000 – 4.0L V6 (245 cid)
Installation & Warranty Notes
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Direct-fit installation with OE-style connections—no welding required
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Inspect gaskets, hangers, and hardware during installation; replace as necessary
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Ensure proper alignment to avoid vibration and premature wear
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Walker SoundFX® mufflers are validated for long service life and OE-style noise control
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Muffler is non-reversible; install with inlet/outlet matched to OE routing
