Fwiw
Grade 12.9 bolts are NOT generic. Covered under ASTM F568 Specification. Grade 12.9 bolts/studs are manufactured from quenched & tempered alloy steel having a minimum tensile strength (min) of 1220 Mpa. Compared to Class 8.8, medium carbon steel; quench and tempered, tensile strength (min) 800 Mpa.
Tensile Strength: The maximum load in tension (pulling apart) which a material can withstand before breaking or fracturing.
M20 aftermarket head bolts?
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You can get OEM bolts for around $25 online. They're much nicer than any other aftermarket head bolt. I also would never use a generic bolt like you listed above. You're a bit off on that ARP cost. They go for around $230 retail.What is available on the market.
Genuine BMW bolts - I did not look up the cost.
ARP stud kit jobber price $285.52
Metric Mechanic Socket Head Bolt Set price $140.00
Grade 12.9, 10mm X 150mm socket head bolts from industrial supplier at $3.00 per bolt a set cost $42.00
Any other bolts on the market?
ARP now makes a specific kit for the M20 engine. They have for a couple years at least.
They are a perfect fit without issue.Leave a comment:
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Thank You for the information.
Raceware head stud set for the M20 cost $329.00.
Looked up Genuine BMW head bolts, part number 11121726478
Set of 14 TORX bolts list price at $32.10
JosephLeave a comment:
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The BMW head bolts are the best you can do for bolts.
They aslo aren't that expensive.
the arp studs are about 3mm too long and on some casts touch the valve cover. (they do on my car)
Raceware (RTE) made the only m20 specific head studs.Leave a comment:
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Jeepers
Should I put the time and effort into a thoughtful response if the person asking the question doesn't care enough to provide a little background?Leave a comment:
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I have no opinion on healthcare plans, as I do not require that information nor do I make a decision on my healthcare plan. As the plan in not available to the general public.
You have to write a dissertation to get an opinion on a product / brand a person used /uses?Leave a comment:
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Joseph what is your opinion on current healthcare plans?
Seriously, if you want an actual answer you need to give a little more context (remember who/what/when/where/why?)Leave a comment:
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What is available on the market.
Genuine BMW bolts - I did not look up the cost.
ARP stud kit jobber price $285.52
Metric Mechanic Socket Head Bolt Set price $140.00
Grade 12.9, 10mm X 150mm socket head bolts from industrial supplier at $3.00 per bolt a set cost $42.00
Any other bolts on the market?Leave a comment:
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M20 aftermarket head bolts?
Your opinion on aftermarket head bolt for the M20?
Thank You
JosephTags: None

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