Replace for GM Shift Lever Seal Installer Remover Transmission Tool ๏ผTurbo 400 350 300 700-R4 4L60 Includes Seal
Product ID: 421054289
๐งNo gearbox removal needed
โ๏ธPrecision fit for GM models
๐ก๏ธDurable high-quality steel rubber
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๐ง Upgrade your transmission gameโinstall like a pro, no sweat!
The E-cowlboy GM Shift Lever Seal Installer Remover is a precision-engineered tool designed for quick and easy seal installation and removal on a wide range of GM transmissions including Turbo 400, 350, 300, 700-R4, and 4L60 models. Its high-quality steel rubber construction ensures long-lasting durability, while its compact size and included seal make it an essential, ready-to-use tool that eliminates the need to remove or lower the gearbox, saving valuable time and effort.
| Manufacturer | E-cowlboy |
| Brand | E-cowlboy |
| Item Weight | 9.9 ounces |
| Product Dimensions | 3.35 x 2.36 x 1.34 inches |
| Manufacturer Part Number | g350 |
P**E
Works great on TH400
Was a little sceptic but it worked. I used it on a C3 vette TH400. It was a little tight on the shaft and I had to screw bolt in to have enough clearance between body and trans to put on shaft, gave it a hit with hammer to seat it, screwed it in about 1 and 1/2 turns, turned the bolt and like magic it pulled it out. Tool worked for me and it still looks good to go again if I needed it and it comes with seal. I would recommend.
J**C
Good seal removal and install tool.
This tool is perfect for a turbo 350 or 400 transmission selector shaft seal and will remove the old seal efficiently, and the new seal fits perfectly as installed with the driver in the kit. Be aware that a 700-R4 or M30/4L60E transmission has a longer selector shaft and this tool will not work for these transmissions, but the seal will do fine using a socket.
R**S
Would not recommend this for GM TH350
Iโve had this tool and seal for a while, just tried to use it today Saturday May 23rd, 2026. Just flat out does not work. Wonโt Thread into the seal, there is just not enough space between the shaft and seal to be threading anything into it. A least with the wall thickness of the tool. Couldnโt even get one thread started into it.
R**S
Good quality and value
Great repair kit and it worked perfectly. Be sure to make certain that you turn the seal extractor well into the seal using a small pry bar and wrench if necessary.
C**L
TH350 shifter gasket
Worked as advertised on TH350. Had no issue, just need to make sure it's squared up before tapping in place. Less than 15 minutes with transmission installed to swap out.
M**1
Worked. Remover tool could be better.
Worked pretty well. Took multiple tries to get the remover tool to bite into the old seal...had to tap it a few times with a small hammer. Got it after about 15 minutes. Not bad for the price.
T**Y
Worked perfect
Worked perfect, quickly replaced the seal on my 95 Chevy G20 van
D**E
COMPLETE JUNK! DO NOT BUY THIS TOOL.
Tool inside diameter is too small to fit over the shaft of an early TH 400 transmission and did not work at all. Iโm a decent machinist and I removed .030โ from the inside diameter bore to allow allow it to fit over the shaft. It still would not thread into the seal. Poor quality tool so I threw it in the trash.
M**O
Excelente.
Excelente.
J**.
good tool
worked as it should and made changing the seal easy.
B**T
It did the job
Very good
B**V
Complete Failure
Does not work , doesnโt fit over transmission selector shaft at all .Complete fail waste of money and time.
L**A
Excellent tool
Would recommend to anyone Tap in first then start thread
Trustpilot
2 months ago
2 weeks ago