MSD 8225 HEI High Performance Direct Replacement Coil

#5478225

MSD 8225 HEI High Performance Direct Replacement Coil

Name: MSD 8225 HEI High Performance Direct Replacement Coil
Brand: MSD
SKU: 5478225
Price: 129.95 USD
Availability: InStock
Rating: 4.8 (10 reviews)

10 Reviews

3 Questions

This coil is a direct replacement of the stock coil
Puts out 42,000 Volts and has a peak current of 200 mA
Primary resistance is .31 OHMs and the secondary is 9.2K OHMs

$129.95

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Product Summary

4.00" Overall Height, HEI / Male Cap Type, Painted

This coil is a direct replacement of the stock coil
Puts out 42,000 Volts and has a peak current of 200 mA
Primary resistance is .31 OHMs and the secondary is 9.2K OHMs
Features special low inductance, high temperature windings which charge faster to give you increased spark energy at higher rpm
The premium epoxy filled construction is designed to withstand harsh race applications as well as the wear and tear of daily driving

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Key Specs

D-40-37

MFG. Part #	8225
Brand	MSD
Maximum Voltage	42,000 volts
CARB EO#

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Need To Know

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MSD 8225 Details

HEI owners now have a choice to replace their stock coil with the MSD High Energy Unitized Coil for GM HEI Distributors. This coil is a direct replacement of the stock coil. The coil features special low inductance, high temperature windings which charge faster to give you increased spark energy at higher rpm. The premium epoxy filled construction is designed to withstand harsh race applications as well as the wear and tear that daily usage dishes out, and still deliver more spark energy to the spark plugs.

Direct performance replacement for GM HEI coil-in-cap distributors
70:1 turns ratio and lower primary resistance produce high voltage output
Full power sparks to 9,000 RPM when used with 83647 MSD HEI Module
Recommended for use with MSD HEI Module PN 83647

Application

Turns ratio:	70:1
Primary resistance:	.31 OHMs
Secondary resistance:	9.2K OHMs
Inductance:	3.5 mH
Maximum voltage:	42,000 Volts
Peak current:	200 mA
Spark duration:	200 uS
Weight:	N/A

Specs

Turns ratio:	70:1
Primary resistance:	.31 OHMs
Secondary resistance:	9.2K OHMs
Inductance:	3.5 mH
Maximum voltage:	42,000 Volts
Peak current:	200 mA
Spark duration:	200 uS
Weight:	N/A

Guides & Documents

Ignition Coils Installation Instructions (5478225)

Warranty Information

http://www.msdhelp.com/

CA WARNING:

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

CARB warning

MSD 8225 Specifications

D-40-37

KEY SPECS
MFG. Part #	8225
Brand	MSD
Maximum Voltage	42,000 volts
CARB EO#

GENERAL
Overall Height	4.00"
Cap Type	HEI / Male
Cap Terminal Style	HEI / Male
Turns Ratio	70:1
Resistance	.60 ohms
Secondary Resistance	8.90 ohms
Inductance	3.5 mH
Peak Current	200 mA
Spark Duration	200 Us
Finish	Painted
GTIN Code	085132082254
Sold in Quantity	Each

Ratings & Reviews

4.8

10 Reviews

Overall Assessment

Customers appreciate our product for its ease of installation, practicality, and superior performance at high RPMs, enhancing the car's efficiency. Recognised for its top-notch quality, our product stands as a direct, quick-connecting swap for OEM HEI coil. Users appreciate the uncomplicated bolt-in design and its overall usability. Highly recommended for its excellent material quality, this coil significantly outmatches its competitors.

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4.8

10 reviews

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Yes

5.0

a year ago

Wheelbarrow

Elkader, Iowa

Verified

High performance indeed.

Would Recommend

prefect fit

5.0

a year ago

Mark the Arcogiest

Indiana

Verified

prefect fit, works great. I would recommend it if anyone needs to wire up a HEI

Would Recommend

Awesome

5.0

a year ago

1926 ford model t

Canada

Verified

Brought my small block k back to life

Would Recommend

I recommend this to any person

5.0

2 years ago

4Ny

Verified

Remove the MSD sticker and you can't tell what it is. So run it in a division where you have to remain stock

Would Recommend

I would buy this again

5.0

2 years ago

Wise racing

Missouri

Verified

Great product

Would Recommend

I would buy this again

4.0

2 years ago

Suamico, WI

Use these for racing, great coils

Would Recommend

I great product

5.0

3 years ago

Mike

Missouri

Verified

Great product

Would Recommend

Works well

5.0

7 years ago

Dirt track

Verified

Works well, helped with car cutting out hot at high rpm.

Would Recommend

Bolt in design, MSD quality

5.0

10 years ago

pikapp33

East Peoria, IL

Verified

Direct swap for your OEM HEI coil. Quick connection and easy installation.

Would Recommend

seems good to me

4.0

10 years ago

Jimmy

highland, il

Verified

not too hard to install, I wouldn't take your old coil out until you are ready to put the new coil in though.

Showing 10 of 10 reviews

Questions & Answers

3 Questions • 3 Answers

Sort Questions

Is this a direct replacement for the Mallory in cap coil?

by Douglas

• 5 months ago

1 answer

View Answer

I replaced my cap, rotor & coil on my pro billet distributor # 8365 My tack started fluctuating so I put the old coil back in & it stopped fluctuating, But the inside of the cap made a lot of noise had to put old stuff back in. Why? I used all msd parts coil 8225, rotor 84101, cap that came with coil in the cap already. Jack

by Jack

• 11 years ago

1 answer

View Answer

12 volt ? bought a drop in replacement HEI dist. from LMC Truck . Coil lasted a week. Instructions say 12 volts from ignition. They don't carry replacement coils. It looks like a MSD.

by mickey9724628200

• 11 years ago

1 answer

View Answer

3 of 3 questions shown