280SL late head bolts

[Benz Dr.]

Does anyone happen to know the PN for the late style head bolts on a 280SL? They measure 115 mm and 145 mm respectively, which is 5 mm longer than the earlier version. I would also be interested in a set if anyone has any spares.

[Jack Jones]

Dan,

I have a Aug 1970 280-SL with engine #130983-10-007297 and the head bolts are 140mm (000912-012039) and 105mm (000912-012029). When I look at the EPC it states that these numbers were used until the end of the 113 production.

Jack   

[Benz Dr.]

Dan,

I have a Aug 1970 280-SL with engine #130983-10-007297 and the head bolts are 140mm (000912-012039) and 105mm (000912-012029). When I look at the EPC it states that these numbers were used until the end of the 113 production.

Jack   

The BBB states that the head bolts were made longer by 5mm up to 115 and 145mm.  Which one is correct?

[Benz Dr.]

The late head bolt numbers are:

 000912 - 012040 for the lomg bolts ( 145 mm )
 000912 - 012032 for the short bolts  ( 115 mm )

[Naj ✝︎]

This sls picture explains all:

http://www.sls-hh-shop.de/en/230-280SL-W113/03-Engine-M127-M129-M130/05-a-Zyl-Kopfschrauben-Info/?_artperpage=10&listorderby=oxstock&listorder=desc


Seems like the longer bolts were used on 130.980 engines after 12 069853

naj

[Jack Jones]

Mine are definitely the shorter bolts as I currently have the engine apart and measured them before my first response.   

[Benz Dr.]

PN 000912 - 012040  has been subbed over to 615-990-03-12 which has a 12 point head probably used on a diesel. It is the right lenght though.

[Jack Jones]

I realize this is probably a silly question but will the block accept the longer head bolts?