ZFM Series

ZF12M

Name: ZF12M
Brand: ZF
SKU: ZF-12M

Part Number: ZF-12M

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ZF12M marine transmission by ZF Marine. Maximum input 73 HP (55 kW) at 5000 RPM. Available ratios 2.136, 2.632. Rated for pleasure duty, light duty, medium duty and continuous duty service. ADR Power Systems supplies, installs, services and repairs ZF marine transmissions and stocks ZF parts.

Input Power:73 HP (54 kW)

View on ZF Website

Detailed Specifications

Transmission Specifications

Max Input Power:: 73 HP (54 kW)

Power Ratings

Duty	Ratio (A position)	Ratio (B position)	hp/RPM	RPM	hp	RPM	hp	RPM	hp	Max hp	Max RPM
PD	2.136	1.955	0.0176	2800	49	3000	53	3600	63	73	5000
PD	2.632	1.955	0.0149	2800	42	3000	45	3600	54	73	5000
LD	2.136	1.955	0.0158	2800	44	3000	47	3600	57	67	5000
LD	2.632	1.955	0.0133	2800	37	3000	40	3600	48	67	5000
MD	2.136	1.955	0.0149	2100	31	2500	37	2800	42	61	5000
MD	2.632	1.955	0.0130	2100	27	2500	33	2800	36	61	5000
CD	2.136	1.955	0.0141	1800	25	2300	32	2600	37	53	5000
CD	2.632	1.955	0.0126	1800	23	2300	29	2600	33	53	5000

PD = Pleasure Duty, LD = Light Duty, MD = Medium Duty, CD = Continuous Duty. Reduced power capacity by the following shock factors: 1 cylinder engine ÷ 1.25, 2 cylinder engine ÷ 1.20, 3 cylinder engine ÷ 1.15. Ratings per ZF Marine technical data sheet of 2026-04-02.

Key Features

Maximum input power: 73 HP (55 kW) at 5000 RPM
Gear ratios: 2.136, 2.632
Duty ratings: pleasure duty, light duty, medium duty, continuous duty

Documents

ZF12M datasheet (PDF)