MC-20-864309 Mercruiser 6 1/2" Riser ronstan orbit blocks - series 125 - single block Kit includes 2 x 16mm

Kit includes 2 x 16mm barbed tails with 1⁄2" BSP internal thread

- Ensures optimal fuel tank venting and water intrusion resistance

Traffic tolerant

Wrapping uses include:• Header tubes to protect plug wires• Downpipes to improve velocity• Sections of exhaust and tail pipe to reduce heat• Motorcycle pipes to prevent leg burns

Perkins NA900012

MC-20-864309 Mercruiser 6 1/2" Riser ronstan orbit blocks - series 125 - single block Kit includes 2 x 16mmBARR MC 20 864309 Mercruiser V6 4. 3L 6 1 2" Dry Joint Elbow Direct replacement elbow riser used in 7 dry joint applications 6 1 2" Height for Mercruiser V6 4. 3L applications Replaces 864309T01 See MC 20 864591 for 8" height with 14 angle riser BARR risers include plugs, gaskets and mouting hardware to mount to manifold