Mercruiser center riser 4 inch 7 degree for exhaust manifolds

Mercruiser Exhaust Riser -Cast Iron 4" 7 Degree (oem 807988A2)

$133.10

GLM Marine

Model: 51140

4 inch Rser for Mercruiser V6 (1983-Present), V8 Small Bl ock (1983-Present), and V8 Big Block (1981-present) center riser manifolds

Exhaust Riser - Cast Iron 4 inch 7 Degree; (oem 807988A2)

For Mercruiser 175-205 GM 229/262 CID V6 (1983-Present)
For Mercruiser 200-320 GM 305/350/377 CID V8 Small Bl ock (1983-Present)
For Mercruiser 330-370 GM 454/502 CID V8 Big Block (1981-present)

image of Replacement 4" riser for Mercruiser center riser manifolds

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Mercruiser 4 inch center riser replacement

Mercruiser Exhaust Riser -Cast Iron 4" 7 Degree (oem 807988A2)

GLM Marine