Section 4 - Specifications
Page 42 90-899883179 OCTOBER 2007
Engine Specifications
Models 4.3 TKS 5.0 TKS 5.7 TKS
Power 142 kW (190 hp) 164 kW (220 hp) 186 kW (250 hp)
Displacement 4.3 L (262 cid) 5.0 L (305 cid) 5.7 L (350 cid)
Specified WOT RPM
range
4400–4800
Idle RPM in neutral 650
Minimum oil pressure at
idle
28 kPa (4 psi)
Thermostat 71° C (160° F)
Timing at idle 10° BTDC
Firing order 1‑6‑5‑4‑3‑2 1‑8‑4‑3‑6‑5‑7‑2
Electrical system 12 V negative (–) ground
Alternator rating 65 A
Recommended minimum
battery rating
375 CCA, 475 MCA, or 90 Ah
Spark plug type AC MR43LTS or AC 41‑993 (platinum)
Spark plug gap 1.50 mm (0.060 in.) 1.14 mm (0.045 in.)
Fluid Specifications
Sterndrives
NOTE: Oil capacity includes gear lube monitor.
Model Capacity Fluid Type
Alpha One 1892 mL (64 oz)
High Performance Gear Lubricant
Bravo One 2736 mL (92‑1/2 oz)
Bravo Two 3209 mL (108‑1/2 oz)
Bravo Three (single seawater pickup) 2972 mL (100‑1/2 oz)
Bravo Three (dual seawater pickup) 2736 mL ( 92‑1/2 oz)
Engine
IMPORTANT: Your application may require more or less than the listed capacity. Use the
dipstick to determine the exact quantity of oil or fluid required. Listed capacities are
approximate.
4.3 TKS Models Capacity Fluid Type
Engine oil (with filter) 3.8 L (4 US qt)
Mercury MerCruiser Full‑Synthetic Engine Oil,
20W‑40, NMMA FC‑W rated
Seawater cooling system 14.1 L (15 US qt) Propylene glycol and purified water
Closed cooling system 19 L (20 US qt)
Mercury Extended Life Coolant/Antifreeze or
Extended Life Ethylene Glycol 5/100 Coolant/
Antifreeze mixed 50/50 with purified water
5.0 TKS and 5.7 TKS Models Capacity Fluid Type
Engine oil (with filter) 4.25 L (4.5 US qt)
Mercury MerCruiser Full‑Synthetic Engine Oil,
20W‑40, NMMA FC‑W rated
Seawater cooling system 20 L (21 US qt) Propylene glycol and purified water
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