The Buckshot Racing #77 USA-Made Replacement Ignition Coil is a high-performance, precision-engineered replacement for the Mercury Race 856991A1 ignition coil.
Designed specifically for the Mercury Racing 280 HP ROS (Race Offshore) Outboard, this ignition coil also seamlessly fits a wide range of Mercury Marine 2-stroke outboard engines, ensuring optimal performance and longevity.
Compatible Mercury Outboard and DFI Models (1998–2006) This ignition coil is fully compatible with Mercury DFI outboard engines manufactured between 1998 and 2006, covering horsepower ranges from 135 HP to 300 HP.
It meets stringent OEM (Original Equipment Manufacturer) specifications, ensuring peak ignition performance for both Mercury and Mariner outboards, as well as MerCruiser stern drives.
Our replacement 856991A1 ignition coil is a critical component within the ignition system. It generates the high-voltage current required to produce a strong spark across the spark plug gap, ensuring precise ignition of the air-fuel mixture in the engine cylinders. Proper spark generation is essential for combustion efficiency, fuel economy, and engine power output.
Key technical features include:
High Dielectric Strength: Prevents internal electrical arcing for improved coil longevity.
Optimized Winding Ratio: Provides maximum voltage output to the spark plugs.
OEM-Grade Epoxy Encapsulation: Protects against moisture, corrosion, and vibration.
Low Primary Resistance: Ensures faster coil charge times and more reliable performance.
The Buckshot Racing 856991 ignition coil can be cross-referenced with the following ignition coil part numbers:
ARCO Part # IG012
Mercury Ignition Coil 339-850227
Sierra Ignition Coil 18-5187
CDI Electronics Ignition Coil 184-0005
Includes One (1) Buckshot Racing 856991A1 Ignition Coil.
Optional Packages:
Set of 6 Coils: $450 total
Set of 6 Coils + 6 Super Wires: $595 total
Compatible Mercury Outboards, SportJets, and Jet Drive Engines The Buckshot Racing 856991A1 ignition coil ensures compatibility with the following Mercury 2.5 and 3.0 Liter outboards, SportJets, and Jet Drive engines, across a variety of serial ranges:
110 Jet (2.5L) - Serial Range: [1B690542 - 1B974227] (Cat.# 90-803502007)
200 DFI Jet Drive (Powerhead) - Serial Range: [0E384500 - 0E435741] (Cat.# 90-883495)
200 DFI Jet Drive (Pump) - Serial Range: [0E379931 - 0E428850] (Cat.# 90-883495)
250 DFI Jet Drive (Powerhead & Pump) - Serial Range: [0E407100 & Up] (Cat.# 90-889510)
115 HP V6: Serial Range: [0G960500 - 0T178499] (Cat.# 90-80350200)
135 HP V6: Serial Range: [0G960500 - 1B737495] (Various Cat.# 90-80350200 - 90-803502007)
150 HP V6: Serial Range: [0G960500 - 1B580029] (Various Cat.# 90-80350200 - 90-803502007)
175 HP V6: Serial Range: [0T178500 - 1B508457] (Various Cat.# 90-80350201 - 90-803502007)
225 HP V6: Serial Range: [0G960500 - 0T598999] (Cat.# 90-803485 / 90-80348501)
200 HP V6: Serial Range: [0T980000 - 1B417701] (Cat.# 90-889453003)
225 HP V6: Serial Range: [0T599000 - 1B508498] (Cat.# 90-889453003 / 90-889453007)
250 HP XS V6: Serial Range: [0T765195 - 0T999973] (Cat.# 90-889352003 / 90-889352004)
300X (3.0L EFI) Pro Max: Serial Range: [0T235084 - 0T429939] (Cat.# 90-85552901)
JP 3.0L DFI: Serial Range: [0T997974 - 1E003045] (Cat.# 90-896291005)
Why Choose Buckshot Racing Ignition Coils?
Made in the USA: Superior craftsmanship with premium materials.
OEM-Compatible: Ensures a direct fit without modification.
Enhanced Durability: Engineered to withstand harsh marine environments.
Optimized Performance: Maximizes ignition efficiency for peak horsepower.
Technical Support and Ordering Information For expert technical assistance, product inquiries, or to place an order, contact Mike Hill:
Email: mike@buckshotracing77.com
Phone: +1-714-697-1716