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Autolite 4056 Copper Non-Resistor Spark Plug 14mm

Manufacturer

Picture for manufacturer Fram

Part Number

4056
10 reviews
Sale Price

$3.09

In Stock (5)

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Usually delivered within 2 days

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Fitment guaranteed

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Product Details

The Autolite 4056 is a copper non-resistor spark plug engineered to deliver reliable ignition performance across a wide range of automotive, powersports, and small engine applications. Featuring a 14mm x 1.25 thread, 3/4" reach, flat seat, and a factory pre-set gap of 0.030" (0.8mm), the 4056 is a straightforward OE-quality replacement built to meet or exceed original equipment standards.

Key Features:

  • Full copper core center electrode — aids in thermal control and improves resistance to fouling for consistent ignition
  • Specially engineered high nickel alloy center and ground electrodes — resist electrical and chemical wear for extended service life
  • High alumina multi-rib ceramic insulator — provides superior thermal conductivity, high dielectric strength, and helps prevent flash-over that can cause misfires
  • Copper-glass seal — bonds the insulator and terminal post center electrode together, ensuring full required voltage at the spark gap with a 100% leak-proof, gas-tight seal
  • Nickel-plated, cold-formed steel shell with precision-rolled threads for corrosion resistance and easy installation
  • One-piece solid terminal post — provides a reliable, high-voltage electrical connection and added mechanical strength
  • Non-resistor design — suitable for applications where onboard electronics do not require RFI suppression
  • Short projection insulator tip
  • Removable nut terminal
  • Factory pre-gapped at 0.030" / 0.8mm
  • Backed by a 2-year limited warranty

Specifications:

  • Thread Size: 14mm x 1.25
  • Reach: 3/4" (19mm)
  • Hex Size: 13/16" (21mm)
  • Seat Type: Flat (Gasket)
  • Pre-Set Gap: 0.030" / 0.8mm
  • Resistor: Non-Resistor
  • Terminal Type: Solid / Removable Nut
  • Center Electrode: Copper Core, Nickel Tip
  • Ground Electrode: Nickel Alloy
  • Insulator: High Alumina Ceramic, Short Projection
  • Manufacturer Heat Range: 9
  • Ground Electrodes: 1

The Autolite 4056 is a trusted industry-standard copper spark plug delivering quick starts, reliable fuel economy, and smooth acceleration — a proven, value-driven choice for routine tune-ups and maintenance.

Excellent prices. Product was very good quality. I would recommend Autoplicity to others.

Very nice.

Everything was fine.

Quick and easy

Autoplicity had an item my vendor had on backorder for weeks in stock and shipped it very quickly. I'm glad i found this place on the web, and will be looking forward to doing business with them in the future!

Fast

Awesome

Thamks

Good price on my THU-A90275. Had to contact customer service...they were professional and eventually resolved my concern. Called over the phone and the guy told me he couldn't help me with a coupon/refund, but that I had to contact support via email (I guess the phone support and email support aren't one and the same). It took a couple emails, but eventually they refunded me what was due.

Wow I love the race ramps I bought for my 2009 dodge challenger srt8 I used Thelm to change the oil 2 days after I got Thelm and they worked great I have extra clearance I wouldnt think of any other place for my parts gas shipping great prices and great shipping prices I'm a very happy customer

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