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Autolite Copper Non-Resistor 4275 Spark Plug

Manufacturer Part Number 4275

J&P Part: 360-404

31 Reviews

This product fits a variety of motorcycles. Please select yours so we can find the right part and guarantee fitment. Select A Motorcycle

$2.99

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31 Reviews

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Description for Autolite Copper Non-Resistor 4275 Spark Plug 

Autolite Copper Non-Resistor 4275 Spark Plug

• Designed for a sharper, leaner spark

• Tapered nickel/chrome alloy tip

• Copper center electrode

Important Product Notes

Product Specs

Manufacturer Part Number: 4275

Material: Nickel/Chrome Alloy Tip, Copper Center Electrode

Sold in Units: Each

Warehouse Part Number: 1057325

Fitment for Autolite Copper Non-Resistor 4275 Spark Plug 

This product fits a variety of motorcycles. Please select yours so we can find the right part and guarantee fitment. Select A Motorcycle

Click (+) to view all compatible models

Harley-Davidson® Models

Duo Glide FL : 1958–1964
Duo Glide FLF : 1958–1964
Duo Glide FLH : 1958–1964
Duo Glide FLHF : 1958–1964
Electra Glide Fat Bob FLHFB : 1965–1970
Electra Glide FLB : 1965–1970
Electra Glide FLBF : 1970
Electra Glide FLFB : 1965–1969
Electra Glide FLH : 1965–1974
Electra Glide FLHB : 1965–1970
Electra Glide FLHF : 1965–1974
FL : 1948
Hydra Glide FL : 1949–1957
Hydra Glide FLE : 1953–1956
Hydra Glide FLEF : 1953–1956
Hydra Glide FLF : 1952–1957
Hydra Glide FLH : 1955–1957
Hydra Glide FLHF : 1955–1957

Customer Reviews for Autolite Copper Non-Resistor 4275 Spark Plug 

Overall Rating:
5/5 based on 31 ratings

5 by

Seems OK

5 by

good plug for the price

5 by

Good quality plug, bike runs crisper right away.

5 by

good plugs for the money. replaced a older set of the same plug in my sportster. bike runs stronger and burns cleaner

5 by

good quality cheap price

5 by

Work Great. Good quality

5 by

They seem to work as good as the HARLEY OEM plugs. Took the bike on a 2200 mile ride, with no problems

5 by

Not listed on invoice or shipped . what happened?

5 by

Great product

5 by

fabulous plugs

4 by

Great plugs!!!

4 by

great for the price

5 by

love Autolites !

5 by

whats there to say about a spark plug other than they worked !

4 by

good plugs

5 by

Good price, for a good sparkplug

5 by

Good

4 by

Good plugs for the price.

5 by

they run good on my 93 dyna

5 by

Excellent

5 by

I've always used this plug. Never fouls.

4 by

Remember these plugs are short reach.

5 by

Run great in the panhead

5 by

Always run these, get a lot of miles out of these

5 by

Fair priced reliable spark plug

5 by

Works just great in the Old Iron Head. No fancy frills just good American made service.

5 by

We have not received these as of yet

5 by

nice plugs

5 by

Good plugs. Long life at a reasonable price.

5 by

Great buy for the price and good quality.

5 by

Works great.

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Important Product Notes

Once opened, electrical items cannot be returned, except in the case of a manufacturing defect.

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