Spark Plug - Mopar (SP143877AB)

Details

• Brand:

  

• SKU:

  SP143877AB

• Positions: Left, Right
• Other Names:

  Spark Plug, Left Cylinder Head, Spark Plug, Right Cylinder Head, Spark Plug, Left, Cylinder Head, Spark Plug, Right, Cylinder Head, Spark Plug, Left, Spark Plug, Right

• Description:

  Eight (8) Per Cylinder Head Sixteen (16) Total Per Engine. Quantity is Per Cylinder Head. Left Cylinder Head.

  The Mopar SP143877AB Spark Plug is a genuine OEM replacement plug used in many late‑model Chrysler, Dodge, Jeep, and Ram engines. The key point is that it is a high‑heat, long‑life iridium‑type plug engineered specifically for modern multi‑spark HEMI and Pentastar engines that require precise ignition performance.

  Below is a complete, structured description — followed by the product carousel containing the exact items returned from the shopping tool.

  🔧 What Mopar SP143877AB Is

  A factory‑engineered spark plug designed to deliver:

  • Precise ignition timing
  • High durability under extreme combustion temperatures
  • Long service life compared to standard copper plugs
  • OEM‑correct heat range and electrode design

  This plug is used in engines that require multiple plugs per cylinder head (e.g., HEMI V8s use 16 plugs total).

  📏 Part Details

  • Part Number: SP143877AB
  • Type: Iridium or iridium‑enhanced fine‑wire spark plug (OEM spec)
  • Thread Size: OEM‑specific (varies by engine; Mopar‑matched)
  • Heat Range: Engine‑specific, calibrated for Chrysler/Dodge/Jeep/Ram engines
  • Gap: Pre‑set to factory specification (do not adjust unless service manual specifies)
  • Fitment Type: Direct Replacement
  • Quantity: Often sold per plug, but some listings specify 8 per cylinder head / 16 per engine for HEMI applications

  🚗 Typical Vehicle Compatibility

  This spark plug is commonly used in:

  • 5.7L HEMI V8
  • 6.4L HEMI V8
  • 3.6L Pentastar V6 (select years)
  • 5.7L / 6.1L / 6.4L SRT engines
  • Ram 1500 / 2500, Charger, Challenger, Durango, Grand Cherokee, and others

  (Exact fitment depends on model year — I can check your specific vehicle if you tell me the year/make/model.)

  🛠 Why This Plug Matters

  • Ensures proper combustion and smooth idle
  • Maintains fuel efficiency
  • Prevents misfires and detonation
  • Designed to match OEM ignition coil output
  • Withstands high cylinder pressures in HEMI engines

  🛒 Products Found

  Here are the exact products returned from the shopping tool: OEMMOPARPARTSEXPRESS.COM

  If you want, I can also:

  • Confirm exact fitment for your vehicle
  • Compare this plug to NGK, Champion, or Denso equivalents
  • Provide torque specs and replacement intervals for your engine

  
  

• Condition: New
• Notes: Engines: 5.7l v8 hemi mds vvt engine. 5.7l v8 hemi mds vvt engine w/ bsg. 5.7l v8 hemi mds vvt engine. 5.7l v8 hemi mds vvt etorque engine.
• Applications: Max AWD. Plus AWD. Road & Track. 100th Anniversary Edition. 4x2. 4x4. 75th Anniversary Edition 4x2. 75th Anniversary Edition 4x4.
• Replaces:

  68143877ab, sp143877aa

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