Walker 18370 Exhaust Muffler
OE Quality 60-Day Returns
Walker
 SoundFX Direct Fit

Walker 18370 Exhaust Muffler

Brand Walker 18370
Universal Or Specific Fit Specific
Shape Round
Grade Type Regular
Body Width 6
Inlet Quantity 1
Outlet Inside Diameter 1.75
Outlet Quantity 1
Reversible No
Tunable No
Overall Length 20.75
Body Height 6
Body Length 15
Body Material Steel
Finish Aluminized
Inlet 1 Type 2 bolt welded flange
Inlet Configuration Offset
Inlet Offset 1.5
Inlet Type 2 bolt welded flange
Muffler Type Combination
Outlet 1 Inside Diameter 1.75
Outlet 1 Type Pipe connection
Outlet Configuration Offset
Outlet Type Pipe connection
Product line SoundFX Direct Fit
Fits Nissan · 22 vehicles

Direct-fit design. Built for specific applications with a clean replacement layout.

Aluminized steel. Helps extend service life compared with low-carbon steel construction.

Durable internals. Mechanical joints and spun-locked heads add strength to the muffler body.

Cross-references TYC 700077 for the same application. See all 1.

$69.71Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $69.71
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
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Walker SoundFX Direct Fit Muffler

Walker SoundFX direct-fit muffler 18370 is built for specific applications and uses aluminized steel for improved service life over low-carbon steel. It combines a round steel body with mechanical interior joints and spun-locked heads for a durable exhaust repair with controlled acoustics.

Key Features

  • Direct-fit exhaust muffler for specific applications
  • 100% aluminized steel construction for corrosion resistance
  • Round steel body with offset inlet and outlet layout
  • Mechanical interior joints and spun-locked heads for added durability
  • 1.75-inch inlet and outlet connections
  • Walker SoundFX direct-fit design for a clean replacement appearance

Detailed Description

This Walker exhaust muffler, part number 18370, is part of the SoundFX Direct Fit line and is engineered as a specific-fit replacement for select Nissan trucks. The combination-style muffler uses a 2-bolt welded flange inlet, pipe connection outlet, and aluminized steel body to balance fitment, durability, and exhaust tone. It is a practical choice for restoring exhaust function on 1983-1986 Nissan 720 and 1986 Nissan D21 applications. This part cross-references TYC 700077 for the same application.

What It Helps Address

  • Exhaust noise that has become louder or uneven
  • Rust-related muffler deterioration
  • Damaged or leaking muffler housings
  • Fitment issues when replacing a specific exhaust assembly

Installation Notes and Tips

Fits 1983-1986 Nissan 720, N/A. Fits 1986 Nissan D21, N/A. If the exhaust uses a welded assembly, replace all required related parts during service. Verify inlet and outlet configuration, flange style, and overall dimensions before installation. Part number 18370 should be matched to the vehicle’s original exhaust layout for proper fit.

Quality Assurance

Walker SoundFX direct-fit mufflers use aluminized steel, mechanical interior joints, and spun-locked heads to support long-term durability and consistent performance in exhaust service.

Related reading

This part fits 22 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelDrive TypeLitersCylindersFuel TypeNotes
1986Nissan720—RWD2.4LL4—If welded assembly, replace all required parts; SoundFX Direct Fit
1986Nissan720—4WD2.0LL4—If welded assembly, replace all required parts; SoundFX Direct Fit
1986Nissan720—4WD2.4LL4—If welded assembly, replace all required parts; SoundFX Direct Fit
1986Nissan720BaseRWD2.0LL4—If welded assembly, replace all required parts; SoundFX Direct Fit
1986NissanD21—4WD2.4LL4—If welded assembly, replace all required parts; SoundFX Direct Fit
1986NissanD21XERWD2.4LL4—If welded assembly, replace all required parts; SoundFX Direct Fit
1986NissanD21ERWD2.4LL4—If welded assembly, replace all required parts; SoundFX Direct Fit
1986NissanD21BaseRWD2.4LL4—If welded assembly, replace all required parts; SoundFX Direct Fit
1985Nissan720—RWD2.4LL4—If welded assembly, replace all required parts; SoundFX Direct Fit
1985Nissan720—4WD2.0LL4—If welded assembly, replace all required parts; SoundFX Direct Fit
1985Nissan720—4WD2.4LL4—If welded assembly, replace all required parts; SoundFX Direct Fit
1985Nissan720BaseRWD2.0LL4—If welded assembly, replace all required parts; SoundFX Direct Fit
1984Nissan720—RWD2.4LL4—If welded assembly, replace all required parts; SoundFX Direct Fit
1984Nissan720—4WD2.4LL4—If welded assembly, replace all required parts; SoundFX Direct Fit
1984Nissan720BaseRWD2.0LL4—If welded assembly, replace all required parts; SoundFX Direct Fit
1984Nissan720——2.4LL4GASIf welded assembly, replace all required parts; SoundFX Direct Fit
1984Nissan720——2.0LL4GASIf welded assembly, replace all required parts; SoundFX Direct Fit
1983Nissan720—RWD2.4LL4—If welded assembly, replace all required parts; SoundFX Direct Fit
1983Nissan720—4WD2.4LL4—If welded assembly, replace all required parts; SoundFX Direct Fit
1983Nissan720BaseRWD2.0LL4—If welded assembly, replace all required parts; SoundFX Direct Fit
1983Nissan720——2.0LL4GASIf welded assembly, replace all required parts; SoundFX Direct Fit
1983Nissan720——2.4LL4GASIf welded assembly, replace all required parts; SoundFX Direct Fit
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
TYC — 700077