Marine parts, fast fulfillment, real support

Get the right part without slowing down your season. PowerBoatSupply helps boat owners order with confidence, backed by trusted marine parts expertise and responsive support.

✓ Fast shipping ✓ Fitment help ✓ Secure checkout

Sierra MerCruiser 3.0 Exhaust Manifold 1990+ 806867A3 860235A03 18-1966 18-1966-1

Marine parts, fast fulfillment, real support

Get the right part without slowing down your season. PowerBoatSupply helps boat owners order with confidence, backed by trusted marine parts expertise and responsive support.

✓ Fast shipping ✓ Fitment help ✓ Secure checkout

Brand:: Sierra

Part Number:: 47-19661

$651.39 $499.99

— You save $151.40

Earn $15.00 in PBS Store Credit

Availability: In Stock - Ships same or next business day. Shipping: Free Shipping Over $99

Current Stock:

Quantity:

Get back on the water faster — ships next business day.

Trusted by boat owners & marine techs

Real OEM parts, fast shipping, and support from a Mercury Platinum Dealer.

✓ Best Price ✓ Fast Fulfillment ✓ Trusted Fitment ✓ Real Support

✓ 17,500+ verified 5-star reviews

Description

MerCruiser EXHAUST MANIFOLD by Sierra

Manifold for 3.0 Liter Engines 1990 and Newer using the "MERCARB"

This has a single idle air adjusting screw

Includes:
• Gaskets
• Pipe plugs
• Fuel line
• Mounting hardware and Instructions

Riser mounting flange is square bolt pattern (2-13/16" x 3-1/16" bolt centers)

Replaces
Mercury: 806867A3, 806867A9, 806867A12 and 815560A5, 815560A7 Replaces OEM NEW PART NUMBER 860235A03 and OLD NUMBER 806867a3 Old Sierra Part Number: 18-1966 superseded to New Sierra Part Number: 18-1966-1

Sierra manifolds are painted, packaged and leak tested.

View AllClose

Specs

UPC:	47-19661
MPN:	18-1966

Reviews

View AllClose