Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 8 - Jul 13
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
B&M Transmission Speedo Port Plug Gm Th350 (20299)B&M Racing & Performance brings you this billet aluminum speedometer port block off plug that fits GM TH350, TH350c, Powerglide, Muncie M 20 and Aisin AY6 transmissions. This plug is used to block the mechanical speedometer gear port when upgrading to an electronic speedometer and includes a replaceable Buna N rubber o ring. It features a black Mil Spec anodized finish for long lasting good looks, even in harsh conditions. Comes with hardware and
B&M Racing & Performance brings you this billet aluminum speedometer port block-off plug that fits GM TH350, TH350c, Powerglide, Muncie M-20 and Aisin AY6 transmissions. This plug is used to block the mechanical speedometer gear port when upgrading to an electronic speedometer and includes a replaceable Buna-N-rubber o-ring. It features a black Mil-Spec anodized finish for long lasting good looks, even in harsh conditions. Comes with hardware and instructions for a quick and easy installation.
Features:
- Billet Aluminum Construction
- Replaceable O-Ring Seal
- Perfect For Electronic Speedometer Conversions
- Mil-Spec Black Anodized Finish
- Includes Stainless Steel Hardware
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.2 ★★★★★
Based on 1132 reviews
Sort
Product Reviews
★★★★★ 4
Works and Mounts Nicely
Style: Data/Line Protection - 12 ft
I wanted to get one of these so I could use it to plug in all of my electronics that I use in my office desk (pretty typical). The desk is in the middle of the room though, so it made it all that much more important that I could "hide" this inside of the desk.
It was a little difficult to figure out where to put the screws so they correctly lined up with the holes in the back of the device, but after a couple of tries, got it to work. It does occassionally fall down. It would be really nice if there were additional holes in the back of the item so you could put 4+ screws into the surge protector so it has the ability to hold up all of the heavy plug in's that are on the market today.
The cord being 12' long was GREAT! This was really the reason that I purchased this model. It eliminates the need to plug this item into an extension cord, which was key.
It's been a good item. Nothing special, but how special can surge protectors get? The 12' cord is great, the item is sturdy and I have been very happy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 21, 2012
★★★★★ 5
Great surge protector
Style: Standard - 7 ft
Reliable product
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 3, 2025
★★★★★ 5
Really nice product from an equally nice company.
Style: Data/Line Protection - 6 ft
Really nice product from an equally nice company.
Note: I do not have PRIME since Amazon.com does NOT stand behind their BS mark-up service and have become WORSE since they started pushing it so much at delivering non PRIME items.
My experience with Belkin has always been Way Over the Top good. So I recommend any product in general. Their customer service namely and their delivery, packaging is STELLAR.
This product is good in that it is robust, the white does not easily scratch (matte type), and the product seems to be well designed overall. The LED's are not obnoxious at all. The wire is thick, robust, but has enough travel to be useful.
Only small enhancement would be to put the switch up top instead of at the end of the power strip to provide more options. And maybe add a USB port.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2018
★★★★★ 5
Works Well And Nicely Designed.......... See Photos~
Style: Data/Line Protection - 12 ft, Style: Data/Line Protection - 12 ft
Delivered as pictured and described. I was a bit concerned because of the super low price, thinking maybe it was a discontinued model due to problems but we've had good experiences with Belkin products so I went with this one...
When facing it plugged into the outlet, the cord does lean right as advertised. Length is also correct. True white, not an almond color, so it looks nice with white outlet and carpet where visible.
The switch is effectively placed on the end where the cord comes out so it's harder to accidentally switch off. Also it lights up on top to indicate green for protected or red for not grounded.
Also designed for a phone line on the opposite end but we haven't had use for that where we are using this surge protector. Will update this review should we utilize that feature or have any issues.
Smart design at a great price. Uploading photos so you can get a closer look. Smile. Hope this is helpful!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 22, 2015
★★★★★ 5
Must use
Style: Data/Line Protection - 6 ft, Style: Data/Line Protection - 6 ft
I love Belkin products especially when power outages happen.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 7, 2026
recommand products
Lancer Tactical Airsoft Rifle Gun 370 - 395 FPS Hybrid Gen 2 M4 SPR "Interceptor" Airsoft AEG (BLACK)
137.50
Pinarello Dyodo Gravel E-Bike - 2021, 47cm
1632.97
Niner SIR 9 Steel Mountain Bike - 2024, Medium
1490.50
Trek Domane SL 7 Disc Road Bike - 2019, 62cm
1360.97
Lancer Tactical Airsoft Gun 370 - 395 FPS Enforcer NIGHT WING AEG w/ Alpha Stock - BLACK
180.00