New neutral safety switch for Velvet Drive, Borg Warner, ZF, and Hurth marine boat transmissions. This is an OEM switch from Velvet Drive, part number 1000-640-004 (1000640004). Exact replacement for ZF 3312308029. These take an 7/8″ wrench to install. View the below chart for applications.
Applications
| Velvet Drive / Borg Warner | 71C, 72C, 73C, 5000 Series, Liberty Series |
| ZF | 45A, 63, 63A, 63IV, 68, 68A, 68IV, 80A, 80IV, 85A, 85IV |
| Hurth | HSW 450A, HWS 450D, HSW 630H, HSW 630A, HSW 630V, HSW 800A, HSW 800V, HSW 800A3 |
There is also a larger, older style neutral safety switch used on older Borg Warner transmissions, which uses a 1-1/8″ wrench to install. If you have this one, you may want to consider converting to the new style using
the 1004-420-052 kit.
Please read the information above thoroughly before asking a question. Questions are generally answered Monday through Friday, 8am to 4pm PST. All correspondence must be via Email or eBay Message.