23 Coolant Hoses

Slingshot · 4 March 2003

Nsx Service Girl recently posted a list, that was quite inclusive; I thought I would refine it to include the expansion tank hoses and replace the AC19424-PL2-000 Hose (I think this is a length of hose, to make 3 Bypass hoses) with the actual B and and 2 each C Bypass hoses that are *. The list and approximate retail prices follow...

1- 79728-SL0-A00 HOSE, WATER INLET (ENGINE) 15.95
2- 79725-SL0-A00 HOSE, WATER OUTLET(HEATER) 6.86
3- 79722-SL0-A00 HOSE, WATER INLET (HEATER) 5.18
4- 79721-SL0-A00 HOSE, WATER INLET (WATER VALVE)15.71
5- 19518-PR7-A00 HOSE, WATER MIDDLE (UPPER) 21.98
6- 19522-PR7-A00 HOSE A, BYPASS 3.18
7- 19424-PR7-A00 HOSE B, OIL COOLER OUTLET 8.90
8- 19423-PR7-A00 HOSE A, OIL COOLER OUTLET 5.48
9- 19422-PR7-A01 HOSE, OIL COOLER INLET 3.53
10-19506-PR7-A01 HOSE, RR. WATER (LOWER)(WHITE PAINTED)16.70
11-19502-PR7-A00 HOSE, FR. WATER (LOWER)(WHITE PAINTED)24.08
12-19501-PR7-A00 HOSE, FR. WATER (UPPER)(WHITE PAINTED)16.70
13-19507-PR7-A01 HOSE, RR. WATER (UPPER)(YELLOW PAINTED)16.70
14-19526-PR7-A00 HOSE E, BYPASS 4.05
15-19519-PR7-A00 HOSE, WATER MIDDLE (LOWER) 24.73
16-79727-SL0-A00 HOSE B, WATER JOINT 13.64
17-79726-SL0-A00 HOSE A, WATER JOINT 8.51
18-19524-PR7-A00 HOSE C, BYPASS 3.38 *
19-19524-PR7-A00 HOSE C, BYPASS 3.38 *
20-19523-PR7-A00 HOSE B, BYPASS 4.25 *
21-19103-PR7-A00 HOSE EXPANSION (UPPER) 6.00
22-19104-PR7-A00 HOSE EXPANSION (LOWER)6.00
23-19107-PR7-A00 TUBE, OVERFLOW 6.00

Approximately 6 hours labor was estimated to replace the hoses.

[This message has been edited by Slingshot (edited 03 March 2003).]

Soichiro · 4 March 2003

I blew an oil cooler (coolant) hose recently and replaced both the inlet and outlet hose. My mechanic did not put on two outlet hoses as listed here, but he did replace a 'Figure 8' style of O-ring or washer inside the oil cooler. He said these often wear on our cars and if/when you do the hoses you should do this rubber part too. I have the part number at home if anyone is interested.

nsxtasy · 4 March 2003

Thanks, Slingshot, for posting this information. Very useful.

Lud · 5 March 2003

Nice post. 6 hours is less than I would have expected - some of those hoses look like a real pain to get to. I'll add that list to the FAQ.

Soichiro · 5 March 2003

I agree with Lud. I was charged 2 hours to replace just the two oil cooler hoses and the O-ring I mentioned.

Larry Bastanza · 6 March 2003

It took me about 1/2 hour to replace the 5 major ones. And it was my first time doing it. If you do the math I think the 6 hours is about right. (that 1/2 hour did not include the bleed)

I know the 2 hours for the oil cooler lines may seen crazy, but they ARE the real hard ones. The hose clamps on the inner pipe connections for the oil cooler are even hard to see, let alone get to!!!!!!!!!

Either way, if you do 23 or the 2 cooler hoses you need to do a flush and bleed, so you have that overhead to consider when comparing the labor.

Slingshot, great post, thanks.

My $.02,

LarryB

[This message has been edited by Larry Bastanza (edited 05 March 2003).]

Soichiro · 6 March 2003

Larry: Thanks for your explanation. I was actually charged 3 hours but deducted 1 for the bleeding PLUS an oil and filter change.

Here is the (oil cooler) (I think) gasket number for those interested:

91318-PY3-000 'Figure 8 Oil Ring'

I was charged $10.02 for this. I was charged prices above those above for the other two hoses. I am very happy with my dealer (Acura Carland in Duluth) and enjoy my relationship with them. After my hose blew I drove their beautiful 2003 TL loaner car for 10 days at no charge. Ten days to repair? I told them I was in no hurry, the wrong parts came in originally etc.

sjs · 6 March 2003

Nice job. Are those really list prices or close to it?

Hey Mark at Dali, you need to lower your price on the 22 piece set you offer!

Slingshot · 8 March 2003

With the exception of the expansion tank hoses, the prices used were provided recently by Nsx Service Girl for AC hoses. For the DIY'ers I would order here for additional savings.

VBNSX · 12 December 2006

resurrecting this from the dead... (see.. I do use the search feature..

)

anyway... take this list.. then this part listing from SoS:
http://www.scienceofspeed.com/products/engine_performance_products/NSX/SFS/engine_coolant_hoses/

and can someone tell me which hoses 'not' to buy from the list since I intend on buying the silicone ones from SoS..

thanks a bunch,
x

Larry Bastanza · 12 December 2006

Go here:

http://www.acuraparts247.com/prddis...catcgry5=RADIATOR+HOSE&ListAll=All&vinsrch=no

This will allow you to cross reference the above OEM part numbers to SoS's pic. The pic is the same OEM slide

.

HTH,
LarryB

VBNSX · 12 December 2006

Larry Bastanza said:
Go here:

http://www.acuraparts247.com/prddis...catcgry5=RADIATOR+HOSE&ListAll=All&vinsrch=no

This will allow you to cross reference the above OEM part numbers to SoS's pic. The pic is the same OEM slide.

HTH,
LarryB

Thank you very much Larry... as always you are a highly important source of information...

Thanks again about a year ago or so for assisting me with the clutch install info...

----------------------------------------

For those of you who may be interested in doing the same thing... remove the following:

5- 19518-PR7-A00 HOSE, WATER MIDDLE (UPPER) 21.98
10-19506-PR7-A01 HOSE, RR. WATER (LOWER)(WHITE PAINTED)16.70
11-19502-PR7-A00 HOSE, FR. WATER (LOWER)(WHITE PAINTED)24.08
12-19501-PR7-A00 HOSE, FR. WATER (UPPER)(WHITE PAINTED)16.70
13-19507-PR7-A01 HOSE, RR. WATER (UPPER)(YELLOW PAINTED)16.70
15-19519-PR7-A00 HOSE, WATER MIDDLE (LOWER) 24.73

Just as I had expected.... the 6 most expensive from the list.. :tongue:
x

Tom239 · 12 April 2008

If you want to do all the hoses, plan on (at least) one more hose
than is on the list. [update: the list is more complete than I'd
realized; see Larry's response below]

Note that there are three pipes under the car, and in addition to
19518-PR7-A00 and 19519-PR7-A00 (18 and 17 in the diagram)
there's a third hose that is not drawn in. I bought a length of
hose from NAPA that fit.

Does anyone know if there are part numbers for the hoses that
connect to the heater core, or are those just plain bulk hose?

Hugh · 13 April 2008

Here is the heater core diagram. Are you talking about the hoses that attach to part #4? I'm seeing what I can find. It appears that these hoses go from the heater core to parts #20 and #21 (which look like two pipe assemblies) in the diagram above.

Larry Bastanza · 13 April 2008

He is talking about item #10 in this pic

http://www.acuraautomotiveparts.org...omp=List All&vinnoT=&trim=&trans=&view=normal

This hose is one of three located in the tunnel under the car. #11 is in the engine bay. These hoses are for the heater core water flow.

Regards,
LarryB

Synthesis · 13 April 2008

Tom239 said:

i'm getting sick of these damn coolant hoses! i got all the main hoses done at a dealer, and found that something was leaking a lil. they wouldn't even look at it because it had been over a year before i reported it to them (1 year and 2 WEEKS).... half of that time i wasn't even driving it

needless to say, i was pissed.

replaced the bottle, cap, and expansion hoses. that wasn't it. replaced #12, that wasn't it. now i'm going to replace #11, because i'm pretty confident that's the faulty hose. well, i went to replace it on friday, and access to that single hose is a complete bitch. so i just ordered another #12 and the heater hose (#11 on the heater water illustration), and another #4 and #5 (since i've removed them a couple times already. (is there even a way to remove the bigger hoses without cutting them off???)

i figure start all of them fresh while i'm in there. still..... i'm paying for this over and over

if i didn't get wholesale on parts, and was too afraid to work on the car, i'd be realllly pissed. anyway, i can't wait till that little leak is GONE.

JZ TWINS · 13 April 2008

The Acura Carland parts site is pretty cool. I like how they have the diagrams with the part numbers

Tom239 · 13 April 2008

Larry Bastanza said:
He is talking about item #10 in this pic

http://www.acuraautomotiveparts.org...omp=List All&vinnoT=&trim=&trans=&view=normal

This hose is one of three located in the tunnel under the car.

I stand corrected; the hose is on the list, 79727-SL0-A00.

And the page you cited also shows the hoses I was curious about that connect to the heater core in front.

Thanks Larry-- you rock!

ftuhy · 12 August 2014

I'm looking at this old by very useful list with respect to my 1996 NSX. When I look at
http://www.oemacuraparts.com/auto-p...nual-engine/engine-cat/oil-cooler-hose-2-scat I see two differences:
1. Only one of 19524-PR7-A00 (items 18 & 19 below) shows in the diagram (their diagram ref # 12)
2. 19523-PR7-A00 HOSE B, BYPASS (item 20 below) is only used on 1991 - 1994
So, for my 1996, I "only" need 21 hoses.

Anyone disagree??

Slingshot said:
Nsx Service Girl recently posted a list, that was quite inclusive; I thought I would refine it to include the expansion tank hoses and replace the AC19424-PL2-000 Hose (I think this is a length of hose, to make 3 Bypass hoses) with the actual B and and 2 each C Bypass hoses that are *. The list and approximate retail prices follow...

1- 79728-SL0-A00 HOSE, WATER INLET (ENGINE) 15.95
2- 79725-SL0-A00 HOSE, WATER OUTLET(HEATER) 6.86
3- 79722-SL0-A00 HOSE, WATER INLET (HEATER) 5.18
4- 79721-SL0-A00 HOSE, WATER INLET (WATER VALVE)15.71
5- 19518-PR7-A00 HOSE, WATER MIDDLE (UPPER) 21.98
6- 19522-PR7-A00 HOSE A, BYPASS 3.18
7- 19424-PR7-A00 HOSE B, OIL COOLER OUTLET 8.90
8- 19423-PR7-A00 HOSE A, OIL COOLER OUTLET 5.48
9- 19422-PR7-A01 HOSE, OIL COOLER INLET 3.53
10-19506-PR7-A01 HOSE, RR. WATER (LOWER)(WHITE PAINTED)16.70
11-19502-PR7-A00 HOSE, FR. WATER (LOWER)(WHITE PAINTED)24.08
12-19501-PR7-A00 HOSE, FR. WATER (UPPER)(WHITE PAINTED)16.70
13-19507-PR7-A01 HOSE, RR. WATER (UPPER)(YELLOW PAINTED)16.70
14-19526-PR7-A00 HOSE E, BYPASS 4.05
15-19519-PR7-A00 HOSE, WATER MIDDLE (LOWER) 24.73
16-79727-SL0-A00 HOSE B, WATER JOINT 13.64
17-79726-SL0-A00 HOSE A, WATER JOINT 8.51
18-19524-PR7-A00 HOSE C, BYPASS 3.38 *
19-19524-PR7-A00 HOSE C, BYPASS 3.38 *
20-19523-PR7-A00 HOSE B, BYPASS 4.25 *
21-19103-PR7-A00 HOSE EXPANSION (UPPER) 6.00
22-19104-PR7-A00 HOSE EXPANSION (LOWER)6.00
23-19107-PR7-A00 TUBE, OVERFLOW 6.00

Approximately 6 hours labor was estimated to replace the hoses.

[This message has been edited by Slingshot (edited 03 March 2003).]

nsxtasy · 12 August 2014

ftuhy said:
1. Only one of 19524-PR7-A00 (items 18 & 19 below) shows in the diagram (their diagram ref # 12)

That part number is not shown at all in the parts list in your link.

That doesn't necessarily mean that it's not applicable to your car; it possibly could mean that it's been discontinued and is no longer available.

EDIT: As you have indicated below, it wasn't listed because the wrong parts list was shown in the link.

Larry Bastanza · 12 August 2014

1991-94 use 2 of the 19524-PR7-A00
1995+ only uses 1 of them.

All hoses available as of today.....

ftuhy · 12 August 2014

Thanks for catching that. I had 3 diagrams open with coolant hoses, and copied the URL for the wrong diagram. Here it is, in case you are interested. http://www.oemacuraparts.com/auto-p...nual-engine/engine-cat/oil-cooler-hose-2-scat
I've got to stay more awake today!

I also updated it in my previous post. As Larry B noted all are available and even prices are quoted in the link.

nsxtasy said:
That part number is not shown at all in the parts list in your link.

That doesn't necessarily mean that it's not applicable to your car; it possibly could mean that it's been discontinued and is no longer available.

MJK · 26 October 2019

Back from the dead, but still useful. Here is what I ordered for my 94. Disregard the extra hose clamps if you are doing this.

QTY PN Desc Price / ea
1 79728-sl0-a00 hose, water inlet (engine)* $24.65
1 79725-sl0-a00 hose, water outlet(heater) $10.58
1 79722-sl0-a00 hose, water inlet (heater)* $8.00
1 79721-sl0-a00 hose, water inlet (water valve)* $24.25
1 19518-pr7-a00 hose, water middle (upper)* $36.90
1 19522-pr7-a00 hose a, bypass* $5.00
1 19424-pr7-a00 hose b, oil cooler outlet* $14.57
1 19423-pr7-a00 hose a, oil cooler outlet* $9.69
1 19422-pr7-a01 hose, oil cooler inlet* $5.72
1 19506-pr7-a01 hose, rr. Water (lower)(white painted)* $27.02
1 19502-PR7-305 replaces 19502-pr7-a00 hose, fr. Water (lower)(white painted) $36.66
1 19501-PR7-A00 Hose, Front Water (Upper) (White Painted) $22.50
1 19507-pr7-a01 hose, rr. Water (upper)(yellow painted) $27.02
1 19526-pr7-a00 hose e, bypass* $7.50
1 19519-pr7-a00 hose, water middle (lower)* $41.40
1 79727-sl0-a00 hose b, water joint* $21.09
1 79726-sl0-a00 hose a, water joint* $13.16
2 19524-pr7-a00 hose c, bypass* $4.69
1 19523-pr7-a00 hose b, bypass $5.63
1 21-19103-pr7-a00 hose expansion (upper)* Hose, Expansion (Upper) $7.50
1 22-19104-pr7-a00 hose expansion (lower) Hose, Expansion (Lower) $8.44
1 23-19107-pr7-a00 tube, overflow Tube, Over Flow $8.44
1 19045-PR7-J24 Coolant Tank Cap $23.80
4 19513-PE0-003 Clamp, Water Hose (21.7MM) $5.38
2 19012-PD2-004 Gasket, Drain (Toyo) $2.44
2 90471-580-000 Gasket (8mm) $1.90
1 91318-PY3-000 Gasket, Oil Pump $10.73
1 19101-PR7-A02 Expansion Tank $119.76
1 19301-P8E-A10 Thermostat Assembly $46.32
5 OL999-9011A Acura Type II Coolant 1 Gal $19.00

23 Coolant Hoses

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