SKU: 99523925596

6F5-85540-22 CDI Box Power Pack for Yamaha K40J E40J E40G EK40J | JLM Marine

Sale price$25.19 Regular price$27.99
Save 10%

Pay in installments of $7.00 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 27 - Aug 1

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

6F5-85540-22 CDI Box Power Pack for Yamaha K40J E40J E40G EK40J | JLM MarineCDI Box Power Pack for Yamaha K40J E40J E40G EK40J JLM Marine This CDI Box Power Pack is engineered to fit Yamaha 2 stroke 40HP outboard engines, including K40J (1993 2002), E40J (2003), E40G (2003), and EK40J (2003) models. Designed to deliver reliable ignition performance, this aftermarket replacement ensures your engine fires consistently and runs smoothly. This unit directly replaces OEM part numbers 6F5 85540 22, 6F5 85540 21, and 6F6 85540 00,

CDI Box Power Pack for Yamaha K40J E40J E40G EK40J | JLM Marine

This CDI Box Power Pack is engineered to fit Yamaha 2-stroke 40HP outboard engines, including K40J (1993-2002), E40J (2003), E40G (2003), and EK40J (2003) models. Designed to deliver reliable ignition performance, this aftermarket replacement ensures your engine fires consistently and runs smoothly.

This unit directly replaces OEM part numbers 6F5-85540-22, 6F5-85540-21, and 6F6-85540-00, providing a cost-effective solution without sacrificing quality or reliability.

  • CDI igniter provides sufficient energy to ignite fuel and stabilize flame instantly
  • Plug-and-play installation with all necessary connectors included
  • Low heat and low power consumption for efficient operation

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Brand Part Number
Yamaha 6F5-85540-22
Yamaha 6F5-85540-21
Yamaha 6F6-85540-00

Compatible Engine Models

Confirm your engine model/year in the table below. For Yamaha owners, here's a guide to help you identify your engine's serial/model: Yamaha Serial Number Guide. You can also review exploded diagrams to verify part numbers: Yamaha Parts Diagrams & Catalog.

Brand Model Rated HP Stroke Years
Yamaha K40J 40 2 1993-2002
Yamaha E40J 40 2 2003
Yamaha E40G 40 2 2003
Yamaha EK40J 40 2 2003

Technical Specifications

Specification Value
Material Plastic
Features Low heat, low power consumption, plug-and-play connectors
Function Provides ignition energy and stabilizes flame

Package Contents

  • 1 x CDI Igniter
  • The package contains all the parts shown in the product images

Installation Guide

  1. Disconnect the battery and ensure the ignition is off before beginning work.
  2. Locate the existing CDI box on your Yamaha outboard engine.
  3. Carefully disconnect all electrical connectors from the old CDI unit, noting their positions.
  4. Remove any mounting screws or brackets securing the old CDI box in place.
  5. Install the new CDI box in the same location using the original mounting hardware.
  6. Connect all electrical plugs to the corresponding connectors on the new CDI unit.
  7. Double-check that all connections are secure and properly seated.
  8. Reconnect the battery and test the ignition system to ensure proper operation.

Troubleshooting & FAQ

Q: How do I confirm this CDI box fits my Yamaha engine?
A: Cross-reference your engine model and year with the compatibility table above. Also verify your original part number matches 6F5-85540-22, 6F5-85540-21, or 6F6-85540-00.

Q: What are the signs that my CDI box is failing?
A: Common symptoms include difficulty starting, misfiring, irregular idling, loss of power at high RPM, or the engine cutting out unexpectedly. If you experience these issues, inspect the CDI unit and related ignition components.

Q: Can I install this myself or do I need a professional?
A: If you have basic mechanical skills and are comfortable working with electrical connections, installation is straightforward with plug-and-play connectors. However, professional installation is recommended to ensure safety and optimal performance.

Q: How often should I replace the CDI box?
A: CDI boxes typically do not require routine replacement unless they fail. Replace the unit if you experience ignition-related problems or if diagnostic testing indicates a faulty CDI.

Q: What's the difference between this aftermarket CDI and the OEM version?
A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Q: How fast do you ship and how much does it cost?
A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

Q: What is your warranty and return policy?
A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

  • Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
  • This product is an aftermarket replacement part and is not an OEM component.
  • Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

  • Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
  • Fast Global Shipping: Free delivery worldwide in 5–15 days.
  • Direct from Manufacturer: Competitive pricing without compromising quality.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 99523925596

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.6 ★★★★★
Based on 16 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
R
Verified Purchase
Rumor
Los Angeles, US
★★★★★ 4
Good quality, but a few issues with the hidden mounts and levelness.
Size: 35x7 2Pcs, Color: Black, Size: 35x7 2Pcs, Color: Black
These are quite nice and also sturdy. Only complaint I have is that I bought a couple of these, and on one of them, only one of them, it was difficult to get the hidden mounts to go into the holes. I think it was probably a manufacturing defect thing. Also, on that particular one, it wasnt as level as the other. Not a show stopper, but if you need a perfectly level type of mounting situation, I would be careful here.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 14, 2025
N
Verified Purchase
NatKenneally
Los Angeles, US
★★★★★ 5
Great value/easy to install.
Size: 24x6 2Pcs, Color: Black, Size: 24x6 2Pcs, Color: Black
Great product and great value. Easy to install and adds a nice touch to a bathroom.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 21, 2026
B
Verified Purchase
Betty D
New York, US
★★★★★ 5
Easy hanging
Size: 31x7 2Pcs, Color: Black
Great size and easy to hang. Have purchased many for my home.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
D
Verified Purchase
David S.
Lake Worth, US
★★★★★ 5
Look great!
Size: 40x7 2Pcs, Color: Black
Love the way these turned out in my office! I connected 3 shelves in a row across the wall to make one long shelf and it looks great!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 16, 2026
C
Verified Purchase
Chris snyder
Birmingham, US
★★★★★ 3
Nice looking. Not very sturdy. Easy to install.
Size: 40x7 2Pcs, Color: White, Size: 40x7 2Pcs, Color: White
Update: The shelf slopes at about a 45° angle when you put anything more than about a pound on the outside edge of it. Perfectly fine up against the wall. Just seems like the braces inside aren't long enough to really give the stability needed. Bracket is nice and tight against the wall. Had to add braces underneath to hold a small plant, a photo and a small container. Wa sloping more and more each week The shelves look great and we're pretty easy to install. They have a single bracket that is very easy to mount to the wall and get nice and level.. The downside is that the bracket isn't long enough to go between studs. This seems like a pretty simple oversight. I mean why wouldn't you make it long enough to go stud to stud? Secondly and maybe more fatally the bars that go inside the shelf to support them coming out from the wall are significantly shorter than the depth of the shelf. Unfortunately this means the shelf is only supported the first few inches coming out from the wall so there is the potential for a slight lean forward.. The anchors they send are trash. Cheap soft plastic that just tears and bends with a screwdriver. I would suggest spending $2 and grabbing your own anchors from Ace or home Depot. The shelves are essentially made of a high grade cardboard kind of wood. They are not going to support much weight or last for years and years however there incredibly affordable and look nice and easy to install. Long as your expectations are right you'll be happy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 23, 2023

recommand products