Cast Alloy Axle bracket, the one thats held to the axle by the U bolts, has the Silentbloc bush 55147 (46mm dia approx) in it. 

Cast in heat treated LM25 alloy then either left as cast or anodised  silver for corrosion resistance. Replaces original alloy casting that often cracks leaving the bush loose.

3 HA for DB2 & DB2/4 MkI, part no. 55164

4 HA for DB2/4 MkII & MkIII, part no. 77467

Both types supplied, normally from stock

For more serious use we produce the same part machined from solid Aerospace HE15 alloy & then anodised silver.