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Dfi Air Pump Assembly Compatible With Mercury Optimax V6 2.5L 135 150 175 Hp Direct Fuel Injection

600-185A2
OEM PART NUMBERS (Supersession Chain):
• Mercury: 831998A9 / 831998T9 / 831998A12
• Mercury: 831998A13 / 831998A14 / 831998A16
• Mercury: 831998A17 / 831998A21 / 831998A22
• Mercury: 831998A26 / 831998A27 / 831998A28
• Mercury: 899113A03
• Mercury: 8M0050656 / 8M0057463 / 8M0060053

SUPERSESSION ORDER:
• 831998A9 → A12 → A13 → A14 → A16 → A17 → A21 → A22 → A26/A27/A28 → 899113A03 → 8M0050656 → 8M0057463 → 8M0060053 (Current)

SPECIFICATIONS:
• Type: Air Compressor Assembly (Belt-Driven Piston)
• Function: DFI Air-Assisted Fuel Injection Compressor
• Drive: Belt-Driven Off Flywheel (Not Electric)
• Cooling: Water-Cooled w/ Temperature Alarm Sender
• Lubrication: Oil-Fed via Inline Filtered Lines
• Operating Pressure: 80 PSI (Standard) / 95 PSI (Pro XS)
• Weight: ~10 lbs (4,536g)
• Dimensions: 10" W x 11" H x 12" D
• Companion Parts: Inline Oil Filters 875284T01 (Qty 2)
• Source: Aftermarket

NOTE: Fits 95 model/serial combinations per Crowley Marine. SN split at 1B884880/1B884881 for sub-components (compressor assembly itself is same).

⚠️ IMPORTANT: Verify OEM part number before ordering to ensure proper fitment.

PRODUCT NOTICE:
As a parts distributor we mostly sell aftermarket parts (any OEM parts would be noted as such). Aftermarket parts are not sourced from the original vehicle or equipment manufacturer, but are designed to function the same as - if not better than - the original. All parts sold are new.

WARNING - This product may expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

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Description

MERCURY 6-CYLINDER 2.5L DFI OPTIMAX (110-200 HP):
• 110 HP 6-Cyl 3.501" Bore 2.5L Jet DFI (2007-2013) — SN 1B690542+
• 115 HP 6-Cyl 3.501" Bore 2.5L DFI Optimax (2000) — SN 0G960500-0T178499
• 135 HP 6-Cyl 3.501" Bore 2.5L DFI Optimax (1998-2012) — SN 0G960500+
• 150 HP 6-Cyl 3.501" Bore 2.5L DFI Optimax (1998-2014) — SN 0G960500+
• 150 HP 6-Cyl 2.5L Pro XS DFI (2008-2014) — SN 1B690542+
• 175 HP 6-Cyl 3.501" Bore 2.5L DFI Optimax (2001-2014) — SN 0T178500+
• 175 HP 6-Cyl 2.5L Pro XS DFI (2006-2014) — SN 1B516339+
• 200 HP 6-Cyl 2.5L Sport Jet DFI (2001-2006)

MERCURY RACING 2.5L DFI:
• 200XS DFI (2.5L) ROS — Race Offshore Series (SN 1E050852+)
• 200XS SST — Race Outboard (SN 1E050629+)

MARINER 6-CYLINDER 2.5L DFI:
• Mariner 115 DFI V6 2.5L (Model 7115D73ZY/7115D83ZY)
• Mariner 135 DFI V6 2.5L (Model 7135D73UY/7135D83ZY)
• Mariner 150 DFI V6 2.5L (Model 7150D73UY/7150D83ZY)
• Mariner 175 DFI V6 2.5L (Model 7175D73UY/7175D73ZY)

ENGINE SPECIFICATIONS:
• Configuration: 60-Degree V6
• Bore: 3.501" (89mm)
• Stroke: 2.65" (67mm)
• Displacement: 2507cc / 2.5L / 153 CID
• Fuel System: 2-Stage Direct Fuel Injection (DFI / Optimax)
• Engine Type: 2-Stroke
• Full Throttle RPM: 5,200-6,000
• Alternator: 60 Amp / 756 Watt

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  • Item Requires Shipping
  • 5.0 lbs.
  • W8.0000” x H8.0000” x L8.0000”
  • Free Shipping!

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