611659L Rocker Shaft – V8 Engines Defender Discovery Range Rover RANGE ROVER SPORT TOWING The reason for the ring

The reason for the ring and pinion failing is because when the diff is shock loaded

Available in brass

Heavy-duty steel construction to absorb impacts on tough trails

Each shaft is hand-assembled

Defender 90/110/130 – R380 manual gearbox

611659L Rocker Shaft – V8 Engines Defender Discovery Range Rover RANGE ROVER SPORT TOWING The reason for the ringThis Rocker Shaft (Part No. 611659L) supports the rocker arms inside the cylinder head on Land Rovers classic petrol V8 engines. Over time, rocker shafts wear, causing excess valvetrain noise, reduced performance, and accelerated rocker arm wear. Replacing the shaft restores proper valvetrain geometry and smoother engine operation. Manufactured to OE style specifications, this shaft is a direct replacement for worn or damaged rocker shafts on 3. 5L,