Date registered: Feb 2005
Vehicle: Two '87 570SECs, one '87 560SEL
Location: Las Vegas, NV
Mentioned: 6 Post(s)
Quoted: 249 Post(s)
Please complete your profile - where upon this planet do you reside? It does help us help you (you might be just down the road from someone here).
Never have seen the fan held onto the water pump with allen head bolts? They've all been 10mm headed bolts. Are you asking about those four bolts?? Define "gone" - allen head stripped out or the round head of the allen bolt has broken off??
Don't remember the thread size for those but they're very common on the car, nothing special. Take one that came out to a Fastener Shop and they'll be able to match it easily.
US '87 560SEC with Euro headlights, clear markers, H&Rs, 17x8.5/Nitto's, ATE slotted rotors with ceramic pads, BergWerks FGS, 3.07 Limited Slip. '87 560SEL with Euro Headlights, lowered, 235/40/17's