PRODUCT DETAILS
Honda B/F/H/K/L Series Shift Arm Interlock Bolt - 90029-611-010
Rebuilding your Honda or Acura manual transmission and you need the shift arm interlock bolt? This is the hex bolt that secures the interlock to your gear selector assembly. Part number 90029-611-010. It threads into the interlock, holding it in place so your shift rails can't engage two gears at once. When you're doing a transmission rebuild or you're swapping internals, you're supposed to replace this bolt. Old bolts get stretched from constant vibration and they lose clamping force. Fresh bolt keeps your interlock mounted tight so your transmission shifts properly and you don't accidentally engage two gears at the same time.
Here's What This Bolt Does
The shift arm interlock sits inside your transmission between the shift rails. It's the mechanism that prevents you from engaging two gears simultaneously. The interlock bolt mounts the interlock to your transmission case. Without this bolt secured properly, the interlock can move around or come loose. If the interlock shifts position, your shift rails can bypass the cross-locking mechanism and you could engage two gears at once. That locks up your drivetrain instantly. Your transmission seizes, your tires skid, and you're looking at destroyed gears, broken shafts, and a grenaded transmission. The interlock bolt prevents that by keeping the interlock exactly where it needs to be.
Replace It During Transmission Rebuilds
When you're tearing your transmission apart for a rebuild, replace this bolt. It's cheap and it's critical for proper interlock function. The bolt's been under constant stress from vibration for years, maybe decades depending on your car. Reusing old transmission bolts is asking for problems. They don't torque to spec right and parts can work loose. Don't save a couple bucks on a bolt when you're already deep into a transmission rebuild. Replace the bolt, torque it to spec, and know your interlock's not going anywhere.
Fits B/F/H/K/L Series Transmissions
This bolt fits a massive range of Honda and Acura manual transmissions from the 1970s through 2017. B series (Integra, Civic Si, CRX), F series (Accord, Prelude), H series (Prelude VTEC, Accord V6), K series (RSX, Civic Si, TSX), and L series (Fit) transmissions all use this same interlock bolt. If you're working on any Honda or Acura manual transmission from this era, there's a good chance you need this bolt.
What You Get
- Honda OEM shift arm interlock bolt (part number 90029-611-010)
- Hex head bolt
- Secures interlock to gear selector assembly
- Prevents interlock from moving or coming loose
- Critical for preventing double gear engagement
- Same bolt your transmission came with from the factory
Fits Your Car
- 1997-1999 Acura CL
- 1990-2001 Acura Integra
- 2002-2006 Acura RSX
- 2004-2012 Acura TSX
- 1992-1994 Acura Vigor
- 1976-2017 Honda Accord
- 1973-1991 Honda Civic
- 1999-2000 Honda Civic Si
- 2001-2011 Honda Civic DX/EX/LX
- 2002-2011 Honda Civic Si
- 2002-2006 Honda CR-V
- 2011-2016 Honda CR-Z
- 1984-1991 Honda CRX
- 1994-1997 Honda Del Sol VTEC
- 2003-2010 Honda Element
- 2007-2013 Honda Fit
- 1979-2001 Honda Prelude