Is there a source for period correct Serflex or Jubilee hose clamps?

Newco probably has what you're looking for.

https://www.newcoproducts.com/index.php?route=product/category&path=18_45

https://www.newcoproducts.com/index.php?route=product/category&path=228

 

I found my Serflex clamps from EBay France for my 308 platinum winner.

 

an orig serflex will have a round screw head.
current ones have a hex.

 

eBay France will have some of the older serflex.

 

Wurth...
https://www.wurthusa.com/Service-and-Repair-Parts/Clamps/Serflex/c/200208

 

Newco also has a Ferrari listing without the yellow cad plating.

https://www.newcoproducts.com/index.php?route=product/product&product_id=98

 

Some of the older NOS Serflex hose clamps I purchased on Ebay France from Belgium all the clamps for a very low price. He worked at Serflex and had a large stash to sell to me.
Check Ebay US, search "Serflex", some rounded clamps there.
Also, the original French Colson plastic ty-raps can be purchased Via Newark Electronics. (They come from UK)
I use the smaller clamps on vacuum lines (diverter valve, airbox flap, etc) and evaporative emission hoses. Since I put Green stripe coolant hoses, I had to use the Green stripe specific hose clamps which are set to a torque setting. (no leaks) No deductions for Preservation Class.

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Those hose clamps are currently available from Norma.

At the national level preservation judging anything not installed in Maranello is a deduction. Thats why its called "Preservation".

I have used Green Strip hose for 30 years and never used a special clamp and never had leak issues. I can find 50 others with same experience. Green stripe has been a standard replacement hose at every Ferrari shop I have ever been in and never heard a word about using a special clamp. I have even used it with the terrible old Italian strap and clamp type clamps.

 

Current Norma is exact.

 

Pretty difficult to find new correct for that period. Best I have found is to find original and restore finish.

 

Thanks

 

Sorry for the lousy picture. The one on left was removed from an original EVAP hose on a 78 308 just 5 minutes ago. The right is Norma. Available in 2 lengths I am aware of.

The bigger clamps for the early Fiat era cars are far more difficult.
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https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2380057.m570.l1313&_nkw=serflex&_sacat=0


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This is what I used:
Gates Corporation #32228 Stainless steel and requires torque setting.

 

Perfectly good clamp but should be a deduction in any FCA national event and certainly not needed on Green Stripe.
Considering its made by Gates its no surprise they suggest it. Its like Ferrari warning you not to use any non Ferrari part. Its in their commercial best interest.

 

Thats certainly an easier source than where I had to get mine. Good find.