Original BMW Rear Exhaust Rocker Arm Shaft for BMW 2800CS, 3.0CS, Bavaria, and 5, 6, and 7 Series M30 (1970–1993)

Built for the BMW M30 inline six, this Original BMW rear exhaust rocker arm shaft carries the exhaust rocker arms at the back of the cylinder head in the 2800CS, 3.0CS, Bavaria, and the 5, 6, and 7 Series from 1970–1993. The rocker arms pivot on this shaft as they pass camshaft movement to the valves, so the shaft is the mounting point for that section of the valvetrain. BMW names it Rocker arm shaft exhaust rear, and it weighs 240 g. This version entered production in April 1986. It is sold individually as one shaft.

Original BMW Parts carry a 24-month parts warranty.

Part number 11-33-1-274-947 replaces the earlier 11-33-1-250-086. BMW marks the change as exchangeable retrospectively, which means the current shaft is the correct replacement for engines first built with the old number. That covers the E3 sedans and E9 coupes, which left the factory years before this version existed. BMW identifies this as the exhaust-side rear shaft, so match that position to the shaft coming out of your head.

Technical Details

• Manufacturer: BMW, Original BMW part
• Part number: 11-33-1-274-947
• Supersedes: 11-33-1-250-086
• BMW part name: Rocker arm shaft exhaust rear
• Engine: M30 inline six
• Weight: 240 g (0.5 lb)
• Production start: April 1986
• Sold as: one shaft
• Warranty: 24-month Original BMW parts warranty

Common Questions

Will this fit an engine built with part number 11-33-1-250-086?
Yes. BMW rates the change as exchangeable retrospectively, so this shaft replaces the older number directly.

Does it fit the 1988 535is?
Yes. The 535is shares the M30 engine and takes this rear exhaust shaft.

Fitment & Compatibility

Check the table below for the exact year, model, submodel, and any listed notes. Send your VIN and PMB Performance will confirm the fit, drawing on more than 20 years in the trade.