Ronstan Headboard Plates - Suits Series 14, 19 & 22 Ball Bearing Systems As well As Series 6 & 8 Ballslide Systems cooling pump 12 x Nuts 3/8" unc

12 x Nuts 3/8" unc Thin Wall Nut  (Takes 1/2" spanner ) (STAINLESS)

This essential spare part not only enhances performance but also offers the flexibility to convert from the old style to the new

(Also replaces heat exchanger only from mercruiser kits # 91036A5 and 91036A8)

Supplied with high quality dash mount switch unit marked "Ballast" fill and empty

Ronstan Headboard Plates - Suits Series 14, 19 & 22 Ball Bearing Systems As well As Series 6 & 8 Ballslide Systems cooling pump 12 x Nuts 3/8" unc5. 4mm (3 16") and 16. 4mm (5 8") holes Convenient track mounting slugs are available for fitting standard profile track to the luff groove of existing masts. Patented system uses low profile cars running on twin races of acetal ball bearings. Cars use the existing luff groove of the mast (no track or installation work required). Ball bearings are captive for easy loading and unloading of cars from mast. They can be easily switched between fully