MerCruiser 4.3 Gaskets and Bolts
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OEM V6 & V8 Small Block manifold mounting bolt 10-53728 8M0214937
Mercury Marine / Quicksilver
$4.90 $3.80NEW OEM MerCruiser (center riser style) Exhaust manifold mounting bolts Fits V6 and small block engines 5.0-305 , 6.2-377, 383approx 1986+ V6 uses 6 bolts per manifoldV8 uses 4 bolts per manifold$4.90 $3.80Qty in Cart: 0Quantity:Price:$4.90 $3.80Buy this product to earn $0.11 in Store CreditSubtotal: -
OEM MerCruiser 4" Exhaust Riser elbow mounting bolt 10-43749
Mercury Marine / Quicksilver
$8.50 $6.59OEM MerCruiser Exhaust Riser mounting bolts Fits 4.3 , small block, and big block MerCruiser engines with 4" Riser Elbows Will not work for dry joint (2002+) Not for riser mounted remote oil filter! see other listings$8.50 $6.59Qty in Cart: 0Quantity:Price:$8.50 $6.59Buy this product to earn $0.20 in Store CreditSubtotal: -
Sold out, Sorry.On Sale
OEM MerCruiser Full Flow Riser Elbow Gasket 27-863726
Mercury Marine / Quicksilver
$17.40 $12.43OEM MerCruiser Full Flow Riser Elbow Gasket 27-863726 Factory gasket that goes between the manifold and riser. Used on GM V6 and V8 engines. This is the Completely open gasket for Full Flow engines only! Exhaust elbow gasket 863726 is the standard...$17.40 $12.43 -
OEM MerCruiser Restricted Riser Elbow to Manifold Gasket 27-863724
Mercury Marine / Quicksilver
$17.60 $13.11OEM MerCruiser Restricted Riser Elbow Gasket 27-863724 Exhaust elbow gasket 863724 is the standard cooling, restrictor gasket. This gasket is for use on V-6 and V-8 MerCruiser stern drives and inboard engines (1981 through 1997) made by General motors...$17.60 $13.11Qty in Cart: 0Quantity:Price:$17.60 $13.11Buy this product to earn $0.39 in Store CreditSubtotal: -
OEM MerCruiser Block off riser elbow Gasket 27-8637251
Mercury Marine / Quicksilver
$18.90 $14.08OEM MerCruiser Block off riser elbow Gasket 27-8637251 Factory gasket that goes between the manifold and riser. Used on GM V6 and V8 engines. This is the Completely blocked off gasket for closed cooling engines only! Exhaust elbow gasket 8637251 is...$18.90 $14.08Qty in Cart: 0Quantity:Price:$18.90 $14.08Buy this product to earn $0.42 in Store CreditSubtotal: -
OEM MerCruiser DRY JOINT Restricted riser elbow Gasket 27-864850a02
Mercury Marine / Quicksilver
$58.25 $49.93OEM MerCruiser DRY JOINT Restricted riser elbow Gasket 27-864850a02 Exhaust elbow gasket 864850A02 is for use on 2002 and newer V-6 and V-8 MerCruiser stern drive and inboard engines with dry joint exhaust manifolds. This is a restrictor style gasket...$58.25 $49.93Qty in Cart: 0Quantity:Price:$58.25 $49.93Buy this product to earn $1.50 in Store CreditSubtotal: -
OEM MerCruiser DRY JOINT riser elbow Full Flow Gasket 27-864547a02
Mercury Marine / Quicksilver
$58.17 $49.86OEM MerCruiser DRY JOINT riser elbow Full Flow Gasket 27-864547a02 Exhaust elbow gasket 864547A02 is for use on 2002 and newer V-6 and V-8 MerCruiser stern drive and inboard engines with dry joint exhaust manifolds. See your owner's manual or service...$58.17 $49.86Qty in Cart: 0Quantity:Price:$58.17 $49.86Buy this product to earn $1.50 in Store CreditSubtotal: -
OEM MerCruiser Exhaust Manifold 90 Drain Plug Elbow Fitting 22-862210a01
Mercury Marine / Quicksilver
$28.00 $24.00OEM MerCruiser Exhaust Manifold 90 Drain Plug Elbow Fitting 22-862210a01 Stainless Steel Exhaust Manifold Drain Elbow Kit 862210A01 is for use on V-6 and V-8 MerCruiser stern drive and inboard engines with center rise manifolds. Kit includes the...$28.00 $24.00Qty in Cart: 0Quantity:Price:$28.00 $24.00Buy this product to earn $0.72 in Store CreditSubtotal: -
MerCruiser " T " fitting for under manifold 22-863786A1
Mercury Marine / Quicksilver
$48.25 $41.36MerCruiser " T " fitting for under manifold 22-863786A1 Exhaust manifold drain t-fitting 863786A1 is for use on MerCruiser V-6 and V-8 (305, 350 and 377 CID) engines with water drain systems. See your owner's manual, parts listing or service manual for...$48.25 $41.36Qty in Cart: 0Quantity:Price:$48.25 $41.36Buy this product to earn $1.24 in Store CreditSubtotal: -
Sold out, Sorry.
OEM MerCruiser 4.3 V6 Manifold to Head Gasket 27-99757 27-8M0215011
Mercury Marine / Quicksilver
$14.40 $10.73OEM MerCruiser 4.3 V6 Manifold to Head Gasket 27-99757 / 8M0215011 Factory gasket that goes between the head and manifold. Used on all center riser 4.3 engines Exhaust manifold gasket 99757 is for use on V-6 engines made by General Motors for...$14.40 $10.73 -
OEM MerCruiser DRY JOINT riser elbow block off Gasket 27-864549a02
Mercury Marine / Quicksilver
$53.92 $46.21OEM MerCruiser DRY JOINT riser elbow block off Gasket 27-864549a02 Exhaust elbow gasket 864549A02 is for use on 2002 and newer V-6 and V-8 MerCruiser stern drive and inboard engines with dry joint exhaust manifolds. This is a block off style gasket. See...$53.92 $46.21Qty in Cart: 0Quantity:Price:$53.92 $46.21Buy this product to earn $1.39 in Store CreditSubtotal: -
OEM MerCruiser Exhaust Center Riser mounting bolt (REMOTE OIL FILTER)
Mercury Marine / Quicksilver
$16.92 $13.80OEM MerCruiser Exhaust Riser mounting bolts (extended) (63/4") Fits 4.3 , small block, and big block MerCruiser engines with 4" Riser Elbows Will not work for dry joint (2002+) ONLY for riser mounted remote oil filter!usually 2x per engine You will...$16.92 $13.80Qty in Cart: 0Quantity:Price:$16.92 $13.80Buy this product to earn $0.41 in Store CreditSubtotal: -
OEM MerCruiser Dry Joint Riser mounting bolt 10-865982057 865982057
Mercury Marine / Quicksilver
$17.17 $14.01NEW Factory OEM MerCruiser Dry Joint Riser mounting bolt 10-865982057 865982057 Please confirm fitment of MerCruiser parts with your serial numberPhotos and descriptions provided via Mercury may not always be accurateAll of our...$17.17 $14.01Qty in Cart: 0Quantity:Price:$17.17 $14.01Buy this product to earn $0.42 in Store CreditSubtotal: -
MerCruiser straight hose fitting 22-866725 22-863804
Mercury Marine / Quicksilver
$17.60 $13.11MerCruiser straight hose fitting 22-866725 22-863804 22-866725 replaces 22-863804 Please confirm fitment of MerCruiser parts with your serial numberPhotos and descriptions provided via Mercury may not always be accurateAll of our Mercury parts are sold...$17.60 $13.11Qty in Cart: 0Quantity:Price:$17.60 $13.11Buy this product to earn $0.39 in Store CreditSubtotal: -
OEM MerCruiser 4.3 V6 1-Piece to 2-Piece Conversion Kit 1996 + 864293a02
Mercury Marine / Quicksilver
$382.17 $293.16CONVERSION KIT 864293a02 Includes: • 2x upper rubber tube (elbow to intermediate elbow) - 32-44358001 • 2x lower rubber tube (for original Y pipe) 32-807458T • 2x lower rubber tube (for New style Y...$382.17 $293.16Qty in Cart: 0Quantity:Price:$382.17 $293.16Buy this product to earn $8.79 in Store CreditSubtotal:
NuWave Marine carries the MerCruiser 4.3 gaskets and bolts you need to properly maintain your boat's engines. We recommend inspecting these parts yearly and replacing the entire exhaust system every 5 years for saltwater applications. Whether you're a veteran mechanic or servicing a motor for the first time, you know that a MerCruiser exhaust has a lot of moving parts. It’s very important to pay attention to the big parts like exhaust manifolds and risers, but don’t overlook smaller components. It’s imperative that your gaskets and bolts are in good shape if you want to prevent water from leaking into the engine. Replacing a simple gasket before it fails can be the difference between keeping your engine running perfectly, and major water leakage.
MerCruiser 4.3 Gasket Set
The MerCruiser 4.3 gasket set from NuWave Marine has all the parts you need to replace the gaskets on your MerCruiser 4.3 exhaust. If you're redoing all your gaskets, it makes sense to buy the full set. If you're just looking for a single gasket, we carry those, too. Keep in mind that when one gasket is starting to wear out, the others probably aren’t far behind. Given that gaskets are relatively inexpensive, it’s usually a good idea to replace them all at once when you start to notice any signs of degradation.
MerCruiser 4.3 Riser Gasket and Bolts
MerCruiser 4.3 manifold bolts and riser gaskets are essential parts that will keep cooling seawater or lake water out of your engine. Of course, they do handle a lot of stress due to the demands of a powerful 4.3L engine and the unique demands of a marine environment. As you’re checking gaskets, remember to also closely inspect your bolts.
Repair Your Boat’s Exhaust with Premium Parts
NuWave carries only OEM and premium aftermarket parts from trusted companies like Sierra. Whether you’re looking for MerCruiser 4.3 Y-pipes, MerCruiser 4.3 manifolds, MerCruiser 4.3 spacer kits, or simply need a few spare gaskets and bolts, our inventory has it all. Don’t hesitate to contact our team if you have any questions.