8 Fairfax St SE
NAPA Auto Parts Genuine Parts Company
8 Fairfax St SE
Leesburg,  VA  20175
(703) 777-2055
Reserve Online Participant
Store Hours
Mon-Fri:7:30 AM-7:00 PM
Sat:8:00 AM-5:00 PM
Sun:9:00 AM-5:00 PM
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Muffler, For 5-8HP horizontal & vertical

Muffler, For 5-8HP horizontal & vertical

Part #: SME 703658
Line: NAPA Small Engine Parts

This item is currently not at your store, but is available for order. Please call store to verify the specific location and delivery details for this item. Note that additional shipping charges may be required.

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Features & Benefits

Warranty: Standard : 2 Year Limited on Manufactures Defect in Material or Workmanship


For 5-8HP horizontal & vertical

  • 3/4" Pipe-low tone
  • Meets or exceeds manufacturers recommended specs.
  • Backed by Sierra’s Limited Lifetime Warranty.
  • Backed by Sierra’s Limited Lifetime Warranty.


Brand NAPA
Replaces OE Part # 393010
Standard or Premium Premium
Engine Manufacturer Briggs & Stratton
Muffler Inlet Size 3/4 in. Male Pipe Thread
Engine HP Rating 5 - 8 hp
VMRS Code 043003001
Muffler Dimensions 5.25 in.
Muffler Outlet Size 2 in.
Muffler Thread Size 3/4 in. Male NPT
Fits Engine Model # 5 hp - 8 hp Horizontal & Vertical

Safety Information

Vehicle Fitment Guide

Product Reviews