A tall, slim plastic windshield washer fluid bottle, as fitted in the engine bay on all Classic Minis from October 1988 when the brake servo was introduced on the brake master cylinder (including the 1275cc), and used up to BD031459 which included HIF44 carb Mini Cooper (approx. 1991). The electric pump fits in this bottle. This bottle usage ended when they began fitting the larger GWW935 and moved the bottle location into the boot (trunk), starting with the single-point injection (SPi) models.

Side Note: All HIF38 carb 1275cc models used GWW935 bottle.

See GWW975 for cap, sold separately. See CZG1496 for bracket, also sold separately.