ZF S542 S547 Synchro Spring & Key Kit – Fits 1-2, 3-4 & 5-Reverse Gears For 1987-1995 Ford Trucks

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Description

This is a synchro spring, ball, and key kit for ZF S542 and S547 transmissions found in 1987 through 1995 Ford trucks.

ZF S5-42 TRANSMISSION SYNCHRO KEYS SPRINGS & BALLS SET FOR One Synchro Assembly Fits 87 95 F250 F350 S542 K

It fits the 1-2, 3-4, and 5-Reverse hubs – but pay attention: the S5-42 needs 3 kits per transmission because it uses one per hub, while the S5-47 only needs 1 kit for the 1-2 hub.
So check what you’re working on.

ZF S6-650 1-2 Synchro Key & Spring Kit, ZFS6-K1

The kit includes 3 springs, 3 balls, and 3 keys – that’s the full set for one hub.
The material is steel, so it’s durable and holds up to the abuse of daily driving or towing.
Manufacturer part numbers cross to S542-K, S5-47 Synchro Key Spring Ball Kit, and 1307PPK.

ZF S5-42 TRANSMISSION SYNCHRO KEYS SPRINGS & BALLS FULL SET Fits 87 95 F250 F350 S542 K

Also fits interchange numbers like 0732041571, 732041571, 1307304156, 1307-304-156, and 0635460010.

ZF S542 S547 Synchro Spring & Key Kit fits 1-2, 3-4 & 5-Reverse for 87-95 Ford

The OE number reference is 359700-2K.
This is an aftermarket kit, not vintage, and it’s a direct replacement.
It’s not a universal fit – it’s specifically for those ZF 5-speed manuals.

S5-42 S5-47 Synchro Spring Key Ball Kit Ford 5 Speed ZF S5

If your transmission is grinding or popping out of gear, worn synchro keys and springs are often the culprit.

ZF S5-42 Synchro Repair Kit Synchro Spring & Key Kit For

Rebuilding your trans?
This kit is a must-have.
Installation takes some mechanical know-how, but it’s straightforward if you’ve got the transmission apart.
So if you’re restoring or repairing a Ford truck from that era, grab this kit and get those gears shifting smooth again.
Good stuff.