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JEGS 4L60E Performance Transmission for Vehicles with 1999-2006 GM LS 4.8L, 5.3L, 6.0L Engines

555-603020

made in usa

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4L60E Performance Transmission for Vehicles with 1999-2006 GM LS 4.8L, 5.3L, 6.0L Engines
$1,977.99
$1,798.19
SAVE $179.80
4L60E Performance Transmission
  • 1999-2006 GM LS 4.8L, 5.3L, 6.0L Engines
  • Rear Wheel Drive
  • Lockup
  • Case Fill
  • Dyno Tested
  • 13-Pin Wiring Harness Connector
  • Free Shipping - Ships on 07/02/25

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    603020 is rated 3.6 out of 5 by 12.
    Rated 5 out of 5 by from 4l60e transmission Transmission looked great and works great. Very pleased with fast shipping.
    Date published: 2022-01-14
    Rated 4 out of 5 by from Super quick shipping Ordered my transmission torgue converter and 12 quarts of fluid I had my transmission in less than a a week I installed it yesterday. I’ve only got 10 miles on it wait on tech to open Monday morning so I can get clarification on fluid level the instruction say to fill and read the dipstick like a normal transmission but the guy I order it from said to run it a quart low when hot
    Date published: 2025-03-16
    Rated 4 out of 5 by from Good Transmission for the money Installed this transmission a few weeks ago in my LS swapped ‘65 C10. Installation was simple, filled with Royal Purple Max-Shift fluid, and it worked great, shifted like it has a shift kit in it. Then parked it in shop and 3 days later tranny fluid leaked onto the floor. Found that the pan was leaking badly, removed pan and could see that pan bolts ahead been over tightened at some point and had distorted the pan. Also found 2 pan bolts had bad threads. I was able repair. Jeg’s then agreed to ship me 4 quarts of fluid and a new pan gasket. The pan gasket it comes with is a cheap rubber one. I replaced it with a Fel-pro gasket. Overall I’m happy with the Transmission even though I had to do a little extra work. You can’t get one rebuilt for this price.
    Date published: 2023-06-14
    Rated 2 out of 5 by from Wouldn't recommend Got this to replace the 4l60 I blew in my Silverado. It arrived poorly packaged (it poked through the flimsy box it was packaged in), but I figured whatever, it didn't have any damage. Im happy it comes fully assembled with electronics and all, it made install smooth, paired the trans with a new oem torque converter. Started it up and it ran great until it hit the highway. After that it got a p1870 code. I plan to replace the valve body since I have a new fully assembled one in my garage. Hopefully that does the trick. Ive also noticed trans fluid seeping slowly out of the bellhousing access hole/dust cover. Should have bought a rebuild kit and rebuilt my existing 4l60, overall disappointed with this product for apparently being dyno tested and built to last. They should also package this MUCH better. The box it came in was a joke. Price is pretty average, but should reflect a product that won't have problems out of the box. Time to sort out this p1870...
    Date published: 2021-02-02
    Rated 2 out of 5 by from Shift solenoid a I really hate writing bad reviews. But I bought this 4L60E in Hopes to have my GTO back but now after installing. Trying to figure out what's going on with shift solenoid a for a P0753 code "shift solenoid a electrical" pretty bummed after installing to find out my car would still be on jack stands. Packaging was great and transmission looked great on the outside but its stuck in limp mode for now..
    Date published: 2019-08-14
    Rated 1 out of 5 by from Transmission came with no speed gear I bought this expensive transmission and it came with no speed gear and I spoke to 3 jegs employees and none of them could help me the last one I spoke to basically told me that this transmission came without it and the funny part is that it comes with a brand new speed sensor but no gear really disappointed I’m not a rude person all I want is a solution.
    Date published: 2024-04-08
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    Is there a core return? Do you offer extended warranty?

    Asked by: Ladude
    The Jegs 555-603020 transmission does not have a core or extended warranty at this time.
    Answered by: jshook
    Date published: 2025-05-06

    What stage transmission would this be considered? I keep being asked.

    Asked by: Smackey8500
    The Jegs 555-603020 transmission does not have a stage name associated with it.
    Answered by: jshook
    Date published: 2025-04-29

    Will this fit a 2005 Chevrolet Avalanche 5.3 2wd? What torque converter is recommended with stock stall speed?

    Asked by: Ladude
    The Jegs 555-603020 transmission will fit an '05 Avalanche with 13-pin connector.
    Answered by: jshook
    Date published: 2025-04-28

    how much fluid is needed for a complete fill up and what type is recommended for this transmission?

    Asked by: JASON WEST
    The Jegs 555-603020 transmission uses factory fluid to stock capacity.
    Answered by: jshook
    Date published: 2025-04-17

    Will this fit a 2000 Chevy Silverado with 4x4 drive

    Asked by: Djs2005
    The Jegs 555-603020 transmission does not fit 4x4 models.
    Answered by: jshook
    Date published: 2025-04-14

    Will this fit in a 07 rwd trailblazer ss

    Asked by: Fred
    The Jegs 555-603020 transmission can be used in an '07 Trailblazer.
    Answered by: jshook
    Date published: 2025-04-09

    Will this work with a 2004 pontiac gto 5.7ls

    Asked by: Connhugh
    The Jegs 603020 will fit an 04 GTO with a 4L60E as long as the transmission has a 13-Pin wiring harness connector.
    Answered by: jshook
    Date published: 2025-04-28

    Is this 4l60e 450 hp to flywheel or rear wheel

    Asked by: Gary
    The power rating on the Jegs 555-603020 is rated at the engine.
    Answered by: jshook
    Date published: 2025-03-25
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