Clarification on manual trans & differential crush washers part numbers
#1
Clarification on manual trans & differential crush washers part numbers
I thought this was important enough to start a new thread for the people who intend to change their own manual trans and differential oil and who plan on getting new crush washers instead of reusing the old ones. Apparently, there has been a lot of confusion on the other gear oil threads regarding the part numbers.
In one of the most useful and most cited resources, forum member "jdl" posted pictures of all the parts, torque specs for the four bolts (transmission fill and drain bolts & differential fill and drain bolts), trans & differential oil capacities, and crush washer part numbers. The URL is http://www.5cats.org/rx8/trans_diff_refill/.
"jdl" was correct in stating that the transmission fill and drain washers are identical (they have one part number). However, he listed only one part number for the differential washers, suggesting that the differential fill and drain washers are also identical to each other, which is incorrect. THE DIFFERENTIAL FILL AND DRAIN WASHERS ARE IN FACT DIFFERENT AND HAVE DIFFERENT PART NUMBERS. Even the pictures on jdl's website show clearly that the differential fill washer is COPPER whereas the drain washer is not.
In the "Royal Purple Tranny/Diff Fluid Swap" thread started by forum member "brillo," another forum member, "rev-2-9k," correctly noted that the differential fill and drain washers are different and have different part numbers. However, he listed an incorrect part number (probably an inadvertent mistake).
It seems many forum members have just bought whatever crush washer and reported no leakage and everything fine. But if you wish to stick to the details, here they are:
* manual transmission fill crush washer: Y601-17-361; silver in appearance
* manual transmission drain crush washer: Y601-17-361; silver in appearance
note: the manual trans fill and drain crush washers are one and the same
* differential fill crush washer: 9956-21-800; COPPER in appearance
* differential drain crush washer: 9956-41-800; silver in appearance
note: the copper differential fill crush washer is about 2.5 to 3 times more expensive than the differential drain crush washer.
note: the manual transmission crush washers cost slightly less than the differential drain crush washer.
BTW, you can use the prices on Rosenthal Mazda's website as a rough guide. The URL is http://www.finishlineperformance.com...intenance.html. The couple of local dealerships I called had significantly higher prices than Rosenthal's but I was able to negotiate the prices down a bit by citing Rosenthal's prices. Please note that Rosenthal also fails to differentiate between the differential fill and drain washers, stating only the price for the drain washer at $1.13 each. Their price for the manual transmission fill/drain washer is $0.78 each.
The parts guy at a local dealership was the first person I talked to who knew what is going on with the washers. He also explained to me how the part numbering system works: the middle two-digit number describes the material; the last three-digit number describes the size. So the 17 from the trans washers and the 41 from the differential drain washer indicate they are made of different material even though they are both silver? He wasn't sure.
I hope this helps.
In one of the most useful and most cited resources, forum member "jdl" posted pictures of all the parts, torque specs for the four bolts (transmission fill and drain bolts & differential fill and drain bolts), trans & differential oil capacities, and crush washer part numbers. The URL is http://www.5cats.org/rx8/trans_diff_refill/.
"jdl" was correct in stating that the transmission fill and drain washers are identical (they have one part number). However, he listed only one part number for the differential washers, suggesting that the differential fill and drain washers are also identical to each other, which is incorrect. THE DIFFERENTIAL FILL AND DRAIN WASHERS ARE IN FACT DIFFERENT AND HAVE DIFFERENT PART NUMBERS. Even the pictures on jdl's website show clearly that the differential fill washer is COPPER whereas the drain washer is not.
In the "Royal Purple Tranny/Diff Fluid Swap" thread started by forum member "brillo," another forum member, "rev-2-9k," correctly noted that the differential fill and drain washers are different and have different part numbers. However, he listed an incorrect part number (probably an inadvertent mistake).
It seems many forum members have just bought whatever crush washer and reported no leakage and everything fine. But if you wish to stick to the details, here they are:
* manual transmission fill crush washer: Y601-17-361; silver in appearance
* manual transmission drain crush washer: Y601-17-361; silver in appearance
note: the manual trans fill and drain crush washers are one and the same
* differential fill crush washer: 9956-21-800; COPPER in appearance
* differential drain crush washer: 9956-41-800; silver in appearance
note: the copper differential fill crush washer is about 2.5 to 3 times more expensive than the differential drain crush washer.
note: the manual transmission crush washers cost slightly less than the differential drain crush washer.
BTW, you can use the prices on Rosenthal Mazda's website as a rough guide. The URL is http://www.finishlineperformance.com...intenance.html. The couple of local dealerships I called had significantly higher prices than Rosenthal's but I was able to negotiate the prices down a bit by citing Rosenthal's prices. Please note that Rosenthal also fails to differentiate between the differential fill and drain washers, stating only the price for the drain washer at $1.13 each. Their price for the manual transmission fill/drain washer is $0.78 each.
The parts guy at a local dealership was the first person I talked to who knew what is going on with the washers. He also explained to me how the part numbering system works: the middle two-digit number describes the material; the last three-digit number describes the size. So the 17 from the trans washers and the 41 from the differential drain washer indicate they are made of different material even though they are both silver? He wasn't sure.
I hope this helps.
Last edited by TyrellCorpNexus8; 11-11-2004 at 04:07 PM.
#2
He's as bad as Can
THANKS!
I did my fluid change last month and followed the before-mentioned thread religiously. The copper / aluminum washer thing puzzled me also. Since the copper washer was not in bad shape and is used on the FILL plug I thought the risk of re-using it low. Now I know what to get next time.
I did my fluid change last month and followed the before-mentioned thread religiously. The copper / aluminum washer thing puzzled me also. Since the copper washer was not in bad shape and is used on the FILL plug I thought the risk of re-using it low. Now I know what to get next time.
#7
road warrior
Join Date: Feb 2006
Location: Oakland and Los Angeles, CA
Posts: 1,861
Likes: 0
Received 3 Likes
on
3 Posts
Originally Posted by User24
Six months ago I could only order aluminum. The parts department said copper was "phased out - you don't want them".
#8
Administrator
iTrader: (7)
We managed to resurrect a thread from someone who got banned?! Interesting...
Thanks for the bump as this is on my list of things to do soon.
Thanks for the bump as this is on my list of things to do soon.
#10
2005 Black RX-8 GT 6M
Join Date: Jul 2006
Location: San Jose Area
Posts: 6,350
Likes: 0
Received 0 Likes
on
0 Posts
Just to bump this useful thread.
I called a few SF Bay Area dealers and none of them carried the manual transmission crush washers. Most carried the differential washers. I called Cardinale (Salinas), Oak Tree/Almaden (San Jose), and Menlo (Redwood City).
I ended up buying from Oak Tree in San Jose on Stevens Creek. They were the cheapest. I had to order the two manual transmission washers.
What I paid at Oak Tree:
* manual transmission fill crush washer: Y601-17-361; silver in appearance $2.28
* manual transmission drain crush washer: Y601-17-361; silver in appearance $2.28
* differential fill crush washer: 9956-21-800; COPPER in appearance $6.13 (Ouch!)
* differential drain crush washer: 9956-41-800; silver in appearance $1.52
I called a few SF Bay Area dealers and none of them carried the manual transmission crush washers. Most carried the differential washers. I called Cardinale (Salinas), Oak Tree/Almaden (San Jose), and Menlo (Redwood City).
I ended up buying from Oak Tree in San Jose on Stevens Creek. They were the cheapest. I had to order the two manual transmission washers.
What I paid at Oak Tree:
* manual transmission fill crush washer: Y601-17-361; silver in appearance $2.28
* manual transmission drain crush washer: Y601-17-361; silver in appearance $2.28
* differential fill crush washer: 9956-21-800; COPPER in appearance $6.13 (Ouch!)
* differential drain crush washer: 9956-41-800; silver in appearance $1.52
Last edited by CarAndDriver; 04-05-2007 at 06:52 PM.
#11
An RX ate my baby
Join Date: Aug 2006
Location: A swirling eddy of electronic mayhem
Posts: 267
Likes: 0
Received 0 Likes
on
0 Posts
If you have a copper crush washer and you can't find a local replacement, you can reuse it by annealing it. Heat it until it glows cherry red with a Mapp or propane torch, then quench it in water. It will soften up again and you can reuse it. You can do this a few times before it gets out of shape enough that you should replace it.
Copper gets work-hardened by crushing it, annealing it softens it up again so it makes a new seal.
I'm guessing that the dealers are going to Aluminum because of the high price of copper these days. Aluminum works fine once but you can't reuse it by annealing.
Copper gets work-hardened by crushing it, annealing it softens it up again so it makes a new seal.
I'm guessing that the dealers are going to Aluminum because of the high price of copper these days. Aluminum works fine once but you can't reuse it by annealing.
#13
Administrator
iTrader: (7)
so the fill and the drain crush washers are the same? (for the M/T)
#14
Administrator
iTrader: (7)
Just called Tustin Mazda: they're out of stock but I'll be swinging by later on to order them.
#15
2005 Black RX-8 GT 6M
Join Date: Jul 2006
Location: San Jose Area
Posts: 6,350
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Jedi54
Just called Tustin Mazda: they're out of stock but I'll be swinging by later on to order them.
Good luck!
#16
Administrator
iTrader: (7)
The parts manager is a forum vendor here...he usually takes good care of me. Thanks though C&D, thanks for looking out.
#17
2005 Black RX-8 GT 6M
Join Date: Jul 2006
Location: San Jose Area
Posts: 6,350
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Jedi54
The parts manager is a forum vendor here...he usually takes good care of me. Thanks though C&D, thanks for looking out.
#18
Administrator
iTrader: (7)
I'm too lazy to change all the fluids. I've actually got a Rotary only shop near me so I'll just go there. (they are the ones who did the tranny fluid swap the first time)
I'll probably have them do oil, tranny, differential, and break fluids all at once
I'll probably have them do oil, tranny, differential, and break fluids all at once
#20
2005 Black RX-8 GT 6M
Join Date: Jul 2006
Location: San Jose Area
Posts: 6,350
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by TeamRX8
you can reuse those washers more times than most people will ever see in their ownership
#21
Registered
GASKET. 2004 Mazda RX-8 # A60117117, Y601-17-361, Y60117361
Thank me later.
#24
Registered
I heard ya. I just wanted to change them just because I felt like it. I got all 4 for less than $18 shipped.
#25
Registered