Spark Plug Indexing Washers, 14mm Tapered Seat, 30 Pk

#54571900

Spark Plug Indexing Washers, 14mm Tapered Seat, 30 Pk

Name: Spark Plug Indexing Washers, 14mm Tapered Seat, 30 Pk
Brand: Speedway Motors
SKU: 54571900
Price: 33.99 USD
Availability: InStock
Rating: 4.9 (12 reviews)

12 Reviews

1 Question

For use on all 14mm tapered seat spark plugs
Orients the spark plug electrode opening in the combustion chamber towards intake valve
Ten stamped copper washers each of three thicknesses provide ability to rotate plug up to 315 degrees.

$33.99

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Product Summary

.53" Inside Diameter

For use on all 14mm tapered seat spark plugs
Orients the spark plug electrode opening in the combustion chamber towards intake valve
Ten stamped copper washers each of three thicknesses provide ability to rotate plug up to 315 degrees.
Washer thicknesses are 0.010", 0.021", and 0.032"
Provides an easy way to index your spark plugs for best performance

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Key Specs

MFG. Part #	54571900
Brand	Speedway Motors
Inside Diameter	.53"
Material Type	Copper

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Speedway Motors 54571900 Details

Fits all 14mm spark plugs with a tapered seat
Made from stamped copper material for proper sealing and heat transfer
Indexing spark plugs rotates the electrode ground strap for more complete combustion
Can be reused when new plugs are installed if not overtightened
Includes three thicknesses with 10 washers in each size (30 total per package)

Quickly Position Your Spark Plugs for Best Performance with Easy to Use Indexing Washers

If extracting maximum horsepower & torque is your goal, consider adding these spark plug indexing washers at your next tune up. Indexing shims allow you to properly orient the spark plug electrode within the combustion chamber of the cylinder head. Proper electrode orientation ensures maximum efficiency (complete burn) and increases the speed at which the fuel is burned (more power).

The object of indexing spark plugs is to position the back side of the electrode (ground strap) towards the nearest cylinder wall, away from the middle of the chamber. This helps to unshroud the spark kernel and face it towards the intake valve. Due to manufacturing processes, there is no guarantee the threads are positioned the same on any two spark plugs, or that the threads in the cylinder head are consistent from chamber to chamber. In other words, chances are if you screw a plug into the head, it won't put the electrode in the same position as all the others. Learn more about performance spark plugs in our Toolbox article.

Indexing spark plugs is quick and easy to do, taking nothing more than a set of indexing washers, a marker, and a little time to line things up. These indexing washers are designed for tapered seat 14mm spark plugs only (we do offer 14mm flat gasket seat indexing washers as well). These indexing washers come in three thicknesses, which allow the spark plug to be indexed 105, 210, or 315 degrees of rotation from their non-washer seated position. You can tailor both the position and depth of the electrode using these washers. The kit includes ten (10) copper washers of each thickness (0.010", 0.021" and 0.032"), which may be reused if not over tightened.

Guides & Documents

Spark Plug Indexing Washers Installation Instructions (54571900)

CARB Warning

For race/ off road use only

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

CA WARNING:

Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov

CARB warning

Speedway Motors 54571900 Specifications

KEY SPECS
MFG. Part #	54571900
Brand	Speedway Motors
Inside Diameter	.53"
Material Type	Copper

GENERAL
Spark Plug Seat Style	Tapered
Sold in Quantity	Set
Notes	.

Ratings & Reviews

4.9

12 Reviews

Overall Assessment

Customers appreciate the product for enhancing engine performance, with indexing spark plugs made easy. The parts fit well and are color-coded for differentiation. They're ideal for domed pistons but mustn't be over-tightened. Its ease of installation is also mentioned favorably. A few customers highly recommend these parts due to their functionality and quality. They especially appeal to users due to their simplicity and effectiveness for both new and ongoing projects. In comparison to competitors, this product stands out due to its ensured performance and user-friendly features.

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4.9

12 reviews

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Like Gaskets!

5.0

7 months ago

Jimbob

Alapeca

Verified

We had one or two spark plug holes that wouldn't form a nice seal, we used these and it seemed to help! We used the thinnest ones, we didn't actually index them, just used it like a crush washer.

Would Recommend

I would buy this again if needed

5.0

2 years ago

Ace

Verified

Love these for indexing plugs makes things soooo much simpler. wouldn't be without them!

Would Recommend

Used as intended

5.0

2 years ago

Kaz

Verified

Used these right away. Has a nice selection and will be able to do more then 1 engine with them which is nice

Would Recommend

Yes if need a different size

5.0

3 years ago

Boat 93

Mohave valley Az.

Verified

As described and shipping is fast

Would Recommend

The parts I order from you guys work every time great parts

5.0

4 years ago

Rpm tim

Hastings mn

Verified

I use these parts to get a little bit more performance out of my engine

Would Recommend

Good products,and superb service!

5.0

4 years ago

Thomas

Orebro Sweden

Verified

Very good products,and very fast delivery to Sweden. Will recommend to our racing friends!

Would Recommend

Good stuff!!

5.0

6 years ago

HarperDanger

San Angelo. Tx

Verified

Always have what I need!

Would Recommend

They work great.

5.0

6 years ago

Mike

Mobile, AL

Verified

They fit well and made indexing the spark plugs a breeze. I will order more so I will have them on hand for my future projects. The color coding makes it easy to keep the different thicknesses from getting mixed up.

Would Recommend

I would recommend this product to others with domed pistons.

5.0

7 years ago

Howard the duck

Humansville, MO

Verified

They work great on indexing your spark plugs the only thing is that if you over tighten them they get crushed and you have to change them out to a new one and start over again. Other than that I would recommend this product to anyone who is running a domed piston.

Would Recommend

easy as pie

4.0

8 years ago

Runt 112

Council Bluffs, Iowa

Verified

can't get any easier to install.

Would Recommend

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Questions & Answers

1 Question • 1 Answer

Sort Questions

On spark plugs that come with a compression washer.Do you remove the compression washer and then use one of these washers,or do you use these washers along with the original compression washer?

by Darell

• 10 years ago

1 answer

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1 of 1 questions shown