Take a sample of the hose you need to your local auto parts store they will sell you what you need.
That was actually (much) harder to accomplish than it at first seems!
First, I went to Autozone. In the parking lot, I removed the vacuum hoses. I had to destroy them to get them off ... but ... in the parking lot of the auto parts store, I hadn't yet realized I had reached an impasse.
Unfortunately, Autozone did NOT have any right-sized vacuum hoses in stock. Neither did their sister store (by way of phone call). Autozone 'did' have fuel and heating system hoses; but not vacuum hoses - which he tried to sell me - but I was unsure so I passed on the offer.
Now I was stuck with no hose on the SAS valve, and no hoses on the F-connector after the MAF in the air intake tubing. The Autozone guy said the engine wouldn't run, but it did.
I then drove to a couple of hardware stores; they had 'generic' rubber hoses; but I didn't want to risk the wrong material - since it didn't say 'vacuum' hose.
Finally, I bought the closest thing I could find at O'Reilly's.
BTW, I had these codes, in this order, when I arrived at Autozone:
- SET:
- P0300 BMW 62 Random/Multiple Cylinder Misfire Detected
- P1353 BMW 243, Misfire Cylinder 6 with Fuel Cut-Off
- P1085 BMW 203, Fuel Control Limit Mixture Too Lean (Bank 2 Sensor 1)
- P1351 BMW 242, Misfire Cylinder 5 with Fuel Cut-Off
- P0171 BMW 227, System Too Lean (Bank 1)
- P0174 BMW 228, System Too Lean (Bank 2)
- PENDING:
- P0300 BMW 62 Random/Multiple Cylinder Misfire Detected
After clearing them, and driving about 5 miles to O'Reilly's with no SAS or F-connector hoses, I had the following:
- SET:
- P0171 BMW 227, System Too Lean (Bank 1)
- P0174 BMW 228, System Too Lean (Bank 2)
- PENDING:
- P1083 BMW 202, Fuel Control Limit Mixture Too Lean (Bank 1 Sensor 1)
- P1085 BMW 203, Fuel Control Limit Mixture Too Lean (Bank 2 Sensor 1)
Getting tired of driving around without any vacuum hoses connected, I bought the following hoses. Note: I found the vacuum cap deteriorated, so I added that to the mix after the fact.
- CRP P3340 Thermoid Windshield Washer & Vacuum Tubing
- $3.49 + 8.75% tax for 6 feet of 5/32" vacuum tubing
- GAT 27053 bulk vacuum tubing
- $1.29 + 8.75% tax for 1 foot of 3/8" vacuum tubing
- MTM 41050 Assorted Vacuum Caps
- $4.99 + 8.75% tax for a half-dozen variously sized caps
In hindsight, I 'should' have checked with the dealer to see what they had in stock because, at this point, I have very little confidence that I bought the right rubber hoses.
Following up, after driving another dozen miles or so, the only code I had was a P0174 pending ... so I'm not out of the woods just yet!