Rear fuel hoses - typre and sizes

[bobfather]

I need to purchase replacement fuel hoses for the rear of my car. There are a lot of posts on this subject but recent knowledge about ethanol, etc. has got me worried. I don't want to go to all this effort and use hose that is no longer appropriate.

Hoses to be replaced:
Tank to pump via hump back
Pump to filter
Filter to copper pipe
Return hose from copper pipe to tank
and
Breather via roll over valve to copper pipe.

What is the current thinking on hose grade and reliable suppliers

and if anyone remembers the numbers, what length and what diameter is required

[jojackson4]

12mm and about 300mm of it for tank to pump
The rest is 8 mm I ended up useing 4m of it with all the returns and roll over stuff
I think it’s R9 you need

[Zener]

These do everything you need including the critical recognised branded stuff you need https://www.carbuilder.com/uk/ failing that then http://www.flexiducting.co.uk/?product=goodyear-r9... used both with no issues however avoid Ebay like the plague

[Belle427]

I've used this and it's good quality, all you can do is inspect it periodically but most of the bad stuff you read online is from crap non branded ebay type hose which should be avoided at all costs.
https://www.carbuilder.com/uk/ethanol-proof-fuel-h...

[bobfather]

Many thanks, looks like I'll be placing an order with CarBuilder