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Universal Parts QMB139 Non Emissions Head - 69mm Valves — current source view 1 [P056-49596345909528]

Universal Parts QMB139 Non Emissions Head - 69mm Valves

$52.00
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Universal Parts QMB139 Non Emissions Head - 69mm Valves — current source view 1 [P056-49596345909528]
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  • Universal Parts QMB139 Non Emissions Head - 69mm Valves — current source view 1 [P056-49596345909528]
  • Universal Parts QMB139 Non Emissions Head - 69mm Valves — current source view 2 [P056-49596348104984]
  • Universal Parts QMB139 Non Emissions Head - 69mm Valves — current source view 3 [P056-49596349677848]
  • Universal Parts QMB139 Non Emissions Head - 69mm Valves — current source view 4 [P056-49596351480088]
  • Universal Parts QMB139 Non Emissions Head - 69mm Valves
Universal Parts QMB139 Non Emissions Head - 69mm Valves

Universal Parts QMB139 Non Emissions Head - 69mm Valves

$52.00
Part number 151-249

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Replace a damaged or emissions-restrictive head with the Universal Parts QMB139 Non-Emissions Cylinder Head (SKU 151-249). Fully assembled cast aluminum head — 4-bolt deck pattern, machined valve seats, two valve spring/retainer assemblies (intake and exhaust) installed, spark plug boss, finned cooling fins, cam chain tunnel, and both port flanges machined. Oval 2-bolt intake port flange (17mm ID), round exhaust port flange (18mm ID). 70.5mm diagonal valve center-to-center spacing, 69mm valve length. Non-emissions style — no secondary air injection port. Ready to install.

Features

  • Fully Assembled — Valves, Springs, and Retainers Pre-Installed, Ready to Bolt On
  • Non-Emissions Style — No Secondary Air Injection Port for Performance or Replacement Builds
  • Cast Aluminum Body — 4-Bolt Deck, Finned Cooling Fins, Spark Plug Boss, Cam Chain Tunnel
  • 17mm Oval Intake Port (2-Bolt Flange) | 18mm Round Exhaust Port | 69mm Valve Length | 70.5mm Valve Spacing
  • Fits 139QMB/QMA 50cc/80cc and 157QMJ-Based 125cc/150cc/169cc 4-Stroke Engines

Specifications

  • SKU: 151-249
  • Brand: Universal Parts
  • Engine Type: 139QMB / 139QMA 4-stroke 50cc / 80cc
  • Style: Non-emissions (no secondary air port)
  • Condition: Fully assembled (valves, springs, retainers installed)
  • Valve Length: 69mm
  • Valve Center-to-Center Spacing: 70.5mm
  • Intake Port Diameter: 17mm
  • Exhaust Port Diameter: 18mm
  • Deck Pattern: 4-bolt

Compatible Engine Codes

139QMB-based 50cc / 80cc engines:

Engine Codes
139QMA    139QMB    1P39QMB    1P39QMA-2
YN139QMB    JJ1P39QMB    139FMA-2    BD1P39QMB
BN139QMB    147QMD    Other QMA models    Other QMB models

 

Intended for off-road use only. Not intended for use on public roads or land.

 

Model Fitment

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