Autolite Power Sport Spark Plug, 4164DP, for Select Harley-Davidson, Honda and Yamaha Fits select: 1988-1991 BMW M3, 1989-1990 CHRYSLER TC

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Key item features

  • Compatibility: Fits select Harley-Davidson, Honda, Yamaha motorcycles, ATVs, snowmobiles, and outboard motors.
  • Replacement Options: Replaces Champion (RA8HC) and various NGK spark plugs (D6EA, DCPR6E, DPR6EA-9, D7EA, DCPR7E, DCPR7EVX, DPR7EA-9).
  • Durable Construction: Features a copper-glass seal, multi-rib insulator, and one-piece terminal post for enhanced durability and performance.
  • Performance Enhancement: Full copper core electrode ensures better performance in all conditions.
  • Interference Reduction: Built-in resistor reduces radio frequency interference (RFI) and electrode erosion.
  • Precision Engineering: Cold-formed steel shell with precision rolled threads for a secure fit.
  • Consult Manual: Highly recommended to consult your equipment's repair manual for specific instructions on changing the spark plug.
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Current price is $1.98
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Customer ratings & reviews

4.5 out of 5 stars
stars550 ratings219 reviews
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Reviews summary

Pros

  • : Offers lower cost compared to others.
  • : Made to last with proper fitment.
  • : Compatible with various lawn mower models.
  • : Simple process with clear instructions.
  • : Designed to fit various engines and lawn mowers.

Neutral

  • : Can be reliable and durable, but may arrive defective or mismatched.
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Showing 1-3 of 219 reviews

Dec 21, 2025
Mark
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Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Very good plugs next to champion. I probably believe they're the best plugs I've ever put in my Harley Davidson.

Helpful?3cdde9e0-0b0e-11f1-85c1-b9be452911c7661939405
May 17, 2026
Daniel
Item details
Multipack quantity: 1
Multipack quantity: 1
Multipack quantity: 1
Multipack quantity: 1
Multipack quantity: 1
Multipack quantity: 1
Multipack quantity: 1
Multipack quantity: 1
Multipack quantity: 1
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Nice Sparkplugs

Works well. Tractor runs much better.

Helpful?3cdde9e0-0b0e-11f1-85c1-b9be452911c7661939405
Feb 10, 2026
frank
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Ordered two packages of 4 they came in 3 orders

Helpful?3cdde9e0-0b0e-11f1-85c1-b9be452911c7661939405