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New Marine Oetiker Ear Clamp Kit With Knipex Tool Compatible With Mercury Mercruiser Optimax Efi Dfi

990-500A1
OEM PART NUMBERS:
• Mercury / Mariner: 91-803146A04 / 803146A04 (Current)
• Mercury / Mariner: 91-803146A2 / 803146A2 (Superseded)
• MerCruiser: 91-803146A04

SPECIFICATIONS:
• Type: Oetiker Hose Clamp Kit with Installation Tool
• Clamp Type: Oetiker Stainless Steel "Ear" Clamps
• Clamp Range: 10.3mm to 41mm
• Tool: Knipex Oetiker Installation/Crimping Tool
• Quantity: 56 Stainless Steel Clamps + 1 Tool
• Container: Plastic Trayed Organizer
• Application: Mercury Outboard / MerCruiser Powerhead High-Pressure Hose Service
• Compatibility: Mercury Optimax / EFI / DFI / Verado, MerCruiser Sterndrive
• Condition: New

KIT CONTENTS:
• 6 ea — 12.5mm/12.8mm Ear Clamps
• 15 ea — 14.0mm Ear Clamps
• 15 ea — 15.3mm Ear Clamps
• 15 ea — 16.2mm Ear Clamps
• 5 ea — 25.6mm Ear Clamps
• 5 ea — 28.6mm Ear Clamps
• 1 — Knipex Oetiker Installation Tool

APPLICATIONS:
• Mercury Optimax / EFI / DFI / Verado Outboards
• MerCruiser Sterndrive Engines
• Powerhead High-Pressure Hose Service

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

OETIKER HOSE CLAMP KIT — MERCURY/MERCRUISER POWERHEAD SERVICE TOOL:

COMPLETE OETIKER EAR CLAMP INSTALLATION KIT:
Per Mercury Marine documentation, this is the complete Oetiker ("Ear") hose clamp kit including the Knipex installation/crimping tool plus assorted stainless steel clamps in a plastic-trayed organizer. Used for high-pressure fuel hose installation on Mercury Optimax, EFI, and DFI outboards plus MerCruiser sterndrive engines.

KIT CONTENTS — 56 STAINLESS STEEL EAR CLAMPS + INSTALLATION TOOL:
• Genuine Knipex Oetiker Installation/Crimping Tool
• 6 each — 12.5mm / 12.8mm I.D. Stainless Steel Ear Clamps
• 15 each — 14.0mm I.D. Stainless Steel Ear Clamps
• 15 each — 15.3mm I.D. Stainless Steel Ear Clamps
• 15 each — 16.2mm I.D. Stainless Steel Ear Clamps
• 5 each — 25.6mm I.D. Stainless Steel Ear Clamps
• 5 each — 28.6mm I.D. Stainless Steel Ear Clamps
• Clamp Range: 10.3mm to 41mm
• Plastic Trayed Container for Organization

MERCURY OUTBOARD APPLICATIONS:
• Mercury Optimax Outboards — Fuel Hose Service
• Mercury EFI Outboards — Fuel Hose Service
• Mercury DFI Outboards — High-Pressure Fuel Hose Installation
• Mercury Verado Outboards — Powerhead Hose Service

MERCRUISER STERNDRIVE APPLICATIONS:
• MerCruiser Sterndrive Engines — Powerhead Hose Clamp Service
• MerCruiser Inboard Engines — High-Pressure Hose Installation

OEM SUPERSESSION:
• Original: 91-803146A2
• Current Production: 91-803146A04
Both numbers reference the same Oetiker Clamp Kit per Mercury Marine.

FUNCTIONAL APPLICATION — HIGH-PRESSURE HOSE INSTALLATION:
The Oetiker "Ear" clamp system creates a permanent, leak-proof seal for high-pressure fuel, oil, and coolant hoses. Mercury specifies these stainless steel ear clamps for all powerhead high-pressure hose installations on Optimax, EFI, DFI, and Verado outboards plus MerCruiser sterndrive engines. Standard worm-gear hose clamps are NOT acceptable for these high-pressure applications — Oetiker ear clamps are specified by Mercury Marine.

WHEN TO USE THIS KIT:
• Replacing Fuel Hoses on Mercury Optimax/EFI/DFI Engines
• Powerhead Hose Service on Mercury Outboards
• MerCruiser Sterndrive Hose Replacement
• Marine Service Shop Standard Equipment
• Professional Mercury Service Technician Tool

FITMENT NOTE:
This is a complete OEM-spec replacement Oetiker Hose Clamp Kit equivalent to Mercury 91-803146A04 (supersedes 91-803146A2). Designed for use on Mercury Optimax, EFI, DFI, and Verado outboards plus MerCruiser sterndrive engines. The kit includes the Knipex installation tool — the proper installation tool is essential for correct ear clamp crimping. Standard pliers will NOT properly crimp these clamps.

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Shipping Information

  • Item Requires Shipping
  • 2.0 lbs.
  • W12.0000” x H6.0000” x L15.0000”
  • Free Shipping!

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