Mercury Mercruiser engines

Sterndrive 525 EFI - 525 HP


HP: 525
kW: 410
Full Throttle RPM Range: 4800-5200
Displacement Liter/CID: 8.2/502
Bore & Stroke (in): 4.47/4.00
Bore & Stroke (mm): 114/102
Compression Ratio: 8.75:1
Cylinders: V-8
Alternator Amp: 65
Alternator Watt: 917
Fuel System: MPI
Ignition System: PCM 038 distributorless
Fuel Requirements: 87 Posted Octane (R+M)/2, (92 RON) International
Transmission: (Six) w/Huber 600 Series
Drive Options: Bravo One XR, Bravo One XR w/ITS, Bravo One XR Sport Master (Standard or Short), and Bravo One XR Sport Master (Standard or Short) w/ITS. Dry-Sump Six w/Huber 600
Length (in/mm): 39.5/1003
Width (in/mm): 34/864
Height (in/mm): 24/610
Weight (lbs / kg): 1201/545
Warranty: 1-Year Ltd. for Recreational Boating/3-Year Ltd. Corrosion
SmartCraft: Yes

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Features & Benefits
  • Precision CNC machined 502 C.I.D. cast iron cylinder block.
  • Custom Edelbrock aluminum cylinder heads, designed exclusively for Mercury Racing, enhance torque and overall performance.
  • Advanced, factory installed closed-cooling system features five-year coolant for reduced maintenance and increased corrosion protection.
  • The SmartCraft PCM 038 microprocessor optimizes fuel control for each cylinder independently, enhancing engine running quality and performance.
  • Powerful 65-amp/917-watt alternator provides dependable starting and additional power for operating electrical accessories.
  • Forged 4340 steel, fully machined and shot-peened Mercury Racing connecting rods.
  • Forged aluminum pistons, designed by Mercury Racing, for maximum strength and durability.
  • Multiport fuel injection system incorporates a high-flow throttle body and flame arrestor developed exclusively by Mercury Racing.
  • Water-cooled and insulated fuel system helps keep fuel temperatures down and greatly reduces potential for vapor lock with today's fuels.
  • A thermostatically-controlled, high-capacity oil cooler raises engine oil temperatures faster and keeps them more consistent.
  • A hydraulic roller camshaft and an idle air valve, located at the rear of the intake plenum, work in concert to improve engine idle quality.
  • Comes standard with 1.26:1, 1.35: or 1.50:1 gear ratio Bravo One XR drive in either right-hand or left-hand rotation.
  • Dual-water pickup and low-water pickup gearcase housings available for standard Bravo One XR drives.
  • Bravo One XR Sport Master, Bravo One XR Short Sport Master and Dry-Sump Six drive options available.
  • The Bravo One XR Sport Master gearcase (Std. and Short), available on selected Bravo One XR drives, reduces drag for enhanced overall boat performance in select applications.
  • Integrated Transom System (ITS) available with Bravo One XR and Bravo One XR Sport Master drive options.
  • New engine oil drain line enhances ease of changing oil.
  • Power steering resevoir mounted on front of the engine for easy access.

Gas Sterndrives

HP1075 SCi - 1075 HP
HP575 SCi - 575 HP
HP525 EFI - 525 HP
HP500 EFI - 500 HP
Scorpion 377 - 377 HP
496 MAG High Output - 425 HP
496 MAG - 375 HP
MX 6.2 MPI Horizon - 320 HP
MX 6.2 MPI - 320 HP
350 MAG MPI Horizon - 300 HP
350 MAG MPI - 300 HP

  Drive Options

Dry-Sump Six
Bravo One XR Sport Master
Bravo One XR I.T.S.
Bravo X Diesel
Bravo XR
Bravo X

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3101 Nasa Road One - Seabrook, Texas 77586
Tel: (281) 450-4734 - Fax: (281) 326-2855 -


Bullock Marine offers new & used powerboats as well as performance boat accessories: skater, fountain, eliminator, Mercruiser Mercury Marine (competition - racers & performance propellers, Zero Effort Controls™, K-Plane™ high performance trim tabs, Mercury Racing Trim Indicators™, high performance engines, competition drive, etc.) cigarette boat, welcraft, scarab, donzi boats, catamaran raceboat, high speed twin hull, etc. Bullock Marine is an authorized dealer for Douglas Marine Skater Powerboat, Regy Fountain powerboat & sport boat, Eliminator powerboat & sport boat, and Mercury Mercruiser marine engines, Drive & accessories. Mercury Mercruiser HP 1075 SCi 1075 HP marine engines racing boats Mercury Marine HP 575 SCi 575 HP Sterndrives performance boat Mercruiser HP 525 EFI 525 HP race boat engine for sale powerboats Mercury Mercruiser HP 500 EFI 500 HP stern drives power boat Mercury Marine Scorpion 377 377 HP marine engines high performance boats Mercruiser 496 MAG High Output 425 HP Sterndrives sport boat Mercury Mercruiser 496 MAG 375 HP race boat engine for sale powerboat Mercury Marine MX 6.2 MPI Horizon 320 HP stern drives performance boats Mercruiser MX 6.2 MPI 320 HP marine engines power boats Mercury Mercruiser 350 MAG MPI Horizon 300 HP Sterndrives engines Mercury Marine 350 MAG MPI 300 HP race boat engine for sale mercruiser Mercury Drive Dry-Sump Six drive racing mercruiser powerboats mercury Bravo One XR Sport Master sport boat drives sport boat V SSM drive mercury race power boats III-A SSM drives mercury mercruiser racing boats Bravo One XR drive powerboat Bravo X Diesel mercruiser drives sport boats Bravo XR mercury drive for sale power boats Bravo X drives mercruiser boats Bravo mercury drive sales pleasure Alpha drive mercruiser boat

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