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Questions on Parts for Timing Belt & Water Pump Service

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Car: 1996 NSX Coupe, Automatic, Right Hand Drive JDM, 75k km

Hi, I'm sorry for all of the noob questions to follow. I purchased my first NSX in April although I'm yet to drive it. I've just started learning about the car and I recently received all of the service history from Japan, finally. The timing belt was last changed in 2009 at 42k km. The engine has been inspected and there are no known leaks.

I would like to purchase the parts to do a timing belt/water pump service although I'm having troubles working out the exact parts to purchase. Megazip is having a Black Friday sale so I would like to purchase what I can from them. I'd prefer to get the parts out of Japan. I'm planning on having the minimum amount of work done at this time rather than a complete overhaul with all new hoses, gaskets etc. So generally just the minimum and down the road I will look at doing a much larger job.

1. Water pump. Megazip has 19200-PR7-A01 available and Amayama has 19200-PR7-A01 listed as discontinued and replaced with 19200-PR7-305. Mita says they use 19200-PR7-305. This guide says part 19200-PR7-A03. Which water pump should I be purchasing?

2. 11810-PR7-A02 Updated lower timing belt cover
11816-PR7-000 Grommet - I plan to get these 2 items.

3. Timing Belt. The guide says part 14400-PR7-A01 but not available from Megazip. It's available from Amayama. Is that the correct Timing Belt to purchase or a different one?

4. Alternator Belt 31110-PR7-A01. Amayama is out of production and replaced with 31110-PR7-A05 and that part number is also available at Megazip. Get the 31110-PR7-A05?

5. Airconditioning Belt 38920-PR7-A01. Amayama is out of production and replaced with 38920-PR7-A05, although that part number is not available at Megazip. Get the 38920-PR7-A05?

6. Get all these too? (listed on Mita)
a. 90401-634-000 Timing belt adjuster rubber
b. 14510-PR7-A01 Timing belt adjuster
c. 14516-PR7-A00 Timing belt adjuster spring (out of stock at Megazip)
d. 90016-P0G-A00 Timing belt adjuster bolt
e. 90471-580-000 Gasket 8mm (from Amayama)

Are there any other essentials you would recommend at this time?

Thank you so much in advance.

Regards, Mark
 
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19200-PR7-A01 - Is just the water pump
19200-PR7-305 - Is the water pump and updated cover.

The water pump's weep hole was moved in 1997 so prior years need the updated cover. If your cover has already been updated than you don't need 305. Interestingly at one point 305 was cheaper than A01.
 
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This post from before seems to have all the part numbers for 99 and 91…

Very useful, thanks.

19200-PR7-A01 - Is just the water pump
19200-PR7-305 - Is the water pump and updated cover.

The water pump's weep hole was moved in 1997 so prior years need the updated cover. If your cover has already been updated than you don't need 305. Interestingly at one point 305 was cheaper than A01.
Great, thanks for the info.
 
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Looking at getting from Amayama (cheaper overall)

12030-PR7-010 - PACKING SET, HEAD COVER x2
14400-PR7-A01 - BELT, TIMING x1
14510-PR7-A01 - ADJUSTER COMP., TIMING BELT x1
14516-PR7-A00 - SPRING COMP., TIMING BELT ADJUSTER x1
19200-PR7-305 - PUMP, WATER x1
31110-PR7-A05 - ALTERNATOR BELT x1
38920-PR7-A05 - COMPRESSOR BELT x1
90016-P0G-A00 - BOLT, SPECIAL TIMING BELT ADJUSTER x1
90401-634-000 - RUBBER, TIMING BELT ADJUSTER x1
90471-580-000 - PACKING 8MM x2
91212-PR7-A01 - OIL SEAL, 41X56X7 x1
91302-GE0-000 - SEAL x1
91318-PY3-000 - PACKING, OIL PUMP x1
98079-5615H - PLUG, SPARK x6
 
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I would also replace those 3 hoses on the top of the engine. Pulley shield is cheap insurance from possible problem.
 
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Thank you.

Added:
15400-PL2-306 - FILTER, OIL x1
16010-SL0-000 - FILTER, FUEL x1
17220-PR7-505 - FILTER, AIR x1
46472-568-000 - PACKING, OIL BOLT x4
57199-SB0-801 - CLAMP, HOSE 14MM x2
57370-SL0-J01 - HOSE COMP., PUMP x1
57380-SL0-J02 - HOSE, PRESSURE x1

I'm not sure what the third hose is.

I will purchase the shield separately.
 
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