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Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jun 13 - Jun 18
For Your Every Summer RSVP, with Code: SUMMER15
Description
Inter-Axle Differential Lock Air Rocker Switch 170.1230GTAir Rocker Valve 170. 1230 Inter Axle Differential Lock. Same As Automann 170. 1230, Velvac 032247, Tectran DV3244 1, DV32441, GT Development 32811, Sloan 401244.

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
4.7 ★★★★★
Based on 1854 reviews
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Product Reviews
★★★★★ 5
Perfect
Number of Items: 4, Style: SILZKAR7B11
Great Quality. Worked Perfectly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 13, 2025
★★★★★ 5
Muy buenas
Number of Items: 4, Style: SILZKAR7B11
Excelente
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 29, 2025
★★★★★ 1
Chinese junk
Number of Items: 4, Style: SILZKAR7B11
Chinese junk zero stars but that’s not an option
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
★★★★★ 5
Works if you need help. Not a miracle in a bottle.
Size: 1 Count (Pack of 1)
It has worked every time I've used this product. Won't fix a damage catalytic converter but will help you pass the test if your car almost passed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
★★★★★ 5
Worked like a charm.
Size: 1 Count (Pack of 1)
Used it as directed. Down to an eighth of a tank. Poured it in and added enough gas to get back to one half a tank. Wanted to get it mixed in really well. Immediately jumped on the interstate and ran 75 MPH for 40 miles. Stopped and filled the tank and when I restarted the engine, the light was off. Coincidence? Not a chance. Light had been on continuously for weeks. AutoZone said I needed a catalytic converter. Nope. One thing I found out the hard way. If your gas filler has a flap at the top, make sure it is easy to push aside. Mine had a little release button near the top that the filler hose would depress before the flap would release. Dumped the first bottle right on the ground. Twelve bucks wasted. No one to blame but me, I guess. Still a bargain, even at twice the price.
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Reviewed in the United States on February 17, 2026
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