Help: Radiator Hose Part Number - 986 Forum - The Community for Porsche Boxster & Cayman Owners

I'm trying to find all the part numbers to replace all of the radiator hoses on the engine side for a 1999 Boxster. I think I have the hose numbers and hose clamps figures out with the exception of the heater hose return line (indicated by the red arrow in the Pelican pic). Does anyone know that part number? When I tried a search by part and/or number I kept getting the part number by the heater core int he dash area. And if I can get a bit of verification that I have all the right part numbers I'd appreciate that as well. Here's what I have so far: 1 900-123-144-30 Crush Washer/Sealing Ring for Coolant Drain Plug (10 X 14 X 1 mm), Boxster/Boxster S (1997-04) 1 996-106-222-17 Water Hose to Water Pump (3-Way Hose), Boxster/Boxster S w/Manual Trans. (1997-04) (Purple Arrow) 1 996-106-501-07 Water Hose to Water Flange at Oil Pump Housing (Large Hose), Boxster/Boxster S (1997-04) (Orange Arrow) 1 996-106-502-06 Water Hose to Water Flange (Large Hose), 986 Boxster/Boxster S (1997-04) (Green Arrow) 1 999-512-609-09 Hose Clamp 32 x 12 2 999-512-589-09 Hose Clamp 25 z 12 2 999-512-594-09 Hose Clamp 53 x 12 2 999-512-668-09 Hose Clamp 49 x 12 Here's what I am missing: Heater Hose to Return Line (Red Arrow) Clamps Note: I am planning to use the spring clamps (bought the tool to remove them so might as well use it) Thanks!

I believe that its this one: 997-572-555-00-M100 http://www.pelicanparts.com/More_Info/997-572-555-00-M100.htm?Heater%20Hose%20Heater%20Core%20to%20Retu rn%20Pipe%2C%20Boxster%2FBoxster%20S%20%28%31%39%3 9%37%2D%30%34%29%2C%20Each%20%20

Yeah, that's what I thought too, but when you do a search ont he part number it shows up on the heater core/dash area (I think). Here's the parts fische ... Porsche Boxster Heating System 1 Feed Line Return Line Parts

OK, I hopped under the car again today and traced the hose. It goes from the heater supply to a feed just below the alternator. I beelive the original part number is 996-106-212-06 and the new part is 996-106-212-11. At least the hose looks correct. So, my completed parts list looks like: 1 900-123-144-30 Crush Washer/Sealing Ring for Coolant Drain Plug (10 X 14 X 1 mm), Boxster/Boxster S (1997-04) 1 996-106-222-17 Water Hose to Water Pump (3-Way Hose), Boxster/Boxster S w/Manual Trans. (1997-04) (Purple Arrow) 1 996-106-501-07 Water Hose to Water Flange at Oil Pump Housing (Large Hose), Boxster/Boxster S (1997-04) (Orange Arrow) 1 996-106-502-06 Water Hose to Water Flange (Large Hose), 986 Boxster/Boxster S (1997-04) (Green Arrow) 1 996-106-212-11 Water Hose 1 999-512-609-09 Hose Clamp 32 x 12 3 999-512-589-09 Hose Clamp 25 x 12 1 999-512-606-09 Hose Clamp 29 x 12 2 999-512-594-09 Hose Clamp 53 x 12 2 999-512-668-09 Hose Clamp 49 x 12 Maybe this'll help the next guy looking for parts to do the same job.

Well, new pump thermostat, and all new hoses are installed. I bought a uView Airlift 550000 to remove the air bubbles, create a vacuum, and fill the cooling system. Worked like a charm. Car is good to go once I finish cleaning the rugs and putting the passenger seat back in it.

Ordering the parts! Thanks so much!

As our cars age, a complete kit including all coolant hoses and clamps from our normal suppliers would be of great value to us....

Quotes source post: 565260

yes!!!!!!!!!!!!!!!!!!

98 Boxster. Tip. Soon I'll be replacing the thermostat and water pump. OP listed a parts list: 1 900-123-144-30 Crush Washer/Sealing Ring for Coolant Drain Plug (10 X 14 X 1 mm), Boxster/Boxster S (1997-04) 1 996-106-222-17 Water Hose to Water Pump (3-Way Hose), Boxster/Boxster S w/Manual Trans. (1997-04) (Purple Arrow) 1 996-106-501-07 Water Hose to Water Flange at Oil Pump Housing (Large Hose), Boxster/Boxster S (1997-04) (Orange Arrow) 1 996-106-502-06 Water Hose to Water Flange (Large Hose), 986 Boxster/Boxster S (1997-04) (Green Arrow) 1 996-106-212-11 Water Hose 1 999-512-609-09 Hose Clamp 32 x 12 3 999-512-589-09 Hose Clamp 25 x 12 1 999-512-606-09 Hose Clamp 29 x 12 2 999-512-594-09 Hose Clamp 53 x 12 2 999-512-668-09 Hose Clamp 49 x 12 The hose with 3 arms would be 4 in my case. Is this a comprehensive list? Anything else? I've seen the PP photo with the hoses and such. Is there a reason why one wouldn't want to replace the radiator hoses closer to the front of the car, at the radiators? What would be recommendation on those? Thank you.

Quotes source post: 340185

this helped me a great deal...thank you!

Great post! Thank you. A must read for anyone changing their t-stat and water pump. Here are the new part numbers for the next person that comes across it: 1x required 999-512-551-01 replaces 999-512-609-09 (Hose Clamp 32 x 12) 3x required 999-512-656-09 replaces 999-512-589-09 (Hose Clamp 25 x 12) 2x required 999-512-669-09 replaces 999-512-594-09 (Hose Clamp 53 x 12) 2x required 999-512-348-02 replaces 999-512-668-09 (Hose Clamp 49 x 12) 1x required 999-512-660-09 replaces 999-512-606-09 (Hose Clamp 29 x 12) Don't forget the 2x gals of Porsche Coolant concentrate and 2x gals of distilled water. Coolant can be expensive to ship, so you can always asks your Porsche parts counter for discounts based on auto club memberships or otherwise.

For the heater hose return line (indicated by the red arrow), the part number you're looking for is 996-106-501-52. As for the clamps, you're on the right track with the spring clamps. Good luck with your replacement!