Search  for anything...

40 Series Go Kart Torque Converter Kit: Bolt ON mounting Back Plate,1" Driver, Driven Pulley, Belt, Mounting Hardware, Fits 8-18hp Motors Predator 420cc GX 340/390 (7/8")

Based on 26 reviews
Condition: New
Checking for the best price...
$306.50
Save $20.00 was $326.50

Buy Now, Pay Later


As low as / mo
  • – Up to 36-month term if approved
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: Only 1 left in stock, order soon!
Fulfilled by BLAST LED

Arrives Monday, Nov 9
Order within 11 hours and 35 minutes

Available payment plans shown during checkout

Protect Your Purchase

Easy claims online, fast replacements, no fees

Checking for protection plans...

At a glance

Condition
New
Size
7/8
Model
TC40-100-10T-12T
Weight
28.7 lb

Features 5

  • 40 series torque converter Kit FITS 8HP - 18HP Engines with a 1" Crankshaft, and 1/4" Keyway: Replaces COMET - 209133, 209133A, 209139, 209139A, 209151, 209151A: MANCO - 2432
  • COMPLETE KIT - Package includes: Bolt On Mounting Back Plate, 40 Series 1" Driver Pulley, 40 Series Driven Pulley, 203785 Belt, and all installation Hardware
  • Ideal for Predator 420CC, Honda GX 340/390, Briggs and Straton, Vanguard V-Twins.
  • NO JACKSHAFT NEEDED - Includes mounting back plate with an integrated jackshaft specially designed for 40 series torque converter kit

Description

40 Series Go Kart Torque Converter Kit w/ MOUNTING BACKPLATE 40 series go kart torque converter kit includes set of brand new high quality 40 Series 1" driver pulley, and driven clutch (5/8" OR 3/4" OR 7/8"-- choose your size per your installation), mounting back-plate with jack-shaft and 203785 belt. Plate is cut from 1/4" thick solid steel. Great for use on high performance engines with a 1" crankshaft diameter-- Ideal for Predator 420CC, GX 340/390, Briggs and Stratton, Vanguard V-Twins, Duromax, Powerhouse 420cc and Ironton 420cc. PACKAGE INCLUDES: BLAST LED newly designed bolt holder for bolts on 40 series driver. Newly Design holder for 40 series bolts for 1" crankshaft. BLAST LED 40 series plate is heavy duty, powder coated with top notch quality. It comes with everything to bolt right up including some washers for spacing

Specs 5

Manufacturer BLAST LED
Brand Blast Motion
Item Weight 28.7 pounds
Package Dimensions 18.11 x 10.63 x 9.45 inches
Manufacturer Part Number TC40-100-10T-12T

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Nov 9

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


Expensive, but worth it.
Size: 7/8
Very fine bit of equipment. Well made. Good instructions. Quality piece.
Reviewed in the United States on March 13, 2026 by Clint

not a one brand fits all kind of unit good and heavy duty
Size: 7/8
nice and heavy duty kinda pricy but you get what you pay for
Reviewed in the United States on January 2, 2022 by Gary Henley

Quality product
Size: 7/8
Fits as described
Reviewed in the United States on April 24, 2021 by Amazon Customer

Good kit!
Size: 7/8
Ummm. Don't really know what torque converter kit commentor before me bought or what engine he put it on but I bought this exact kit, bolted it directly onto a Honda GX390 per the instructions and it works perfectly and flawlessly! I did install a "stall kit" in the drive clutch wich included heavier springs and lighter rollers to engage at a much higher rpm for my application, bought separately! So unless you have a setup like his, you'll be in good shape with this kit! ... show more
Reviewed in the United States on June 16, 2020 by nick

Not a fit for counterclockwise rotation engines, but not hard to modify
Size: 7/8
Doesn't seem as poor quality, but most small engines rotate counterclockwise, and this T converter has positively wound spring on the driven pulley. You Will have to take apart tge driven pulley and modify the red spring reversing it to become negatively wound. The red spring that cones with T converter, them reds are all weak springs. You could stretch the spring, and also bend forward like, the last 1.5 inch length of the spring ends. All that adds to the spring stiffness. Also use different hole to wind the spring, so you can achieve more stiffness that way too. All in all this product seems ok, but, if you have counterclockwise rotation engine, it will make you do some work, and figure things. Yellow negatively wound spring from comet is best solution ... show more
Reviewed in the United States on March 23, 2020 by ivank

Not cheap junk
Size: 7/8
Looks like good components. Havent driven it yet so we,ll see how it does...
Reviewed in the United States on July 7, 2022 by David
Checking for best price...