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Shifter Bushing part numbers anyone?

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Old 12-17-20, 07:28 PM
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Shifter Bushing part numbers anyone?

I was thinking this might help some people that are looking to purchase both the upper and lower bushings. Mazdatrix has both upper and lower bushings listed on their website. However, I'm sure many people have run into the same issue I have when I've looked at buying them elsewhere. They don't pull up.

Mazdatrix supplied numbers:

Lower: M501-17-481A
Upper:M508-17-481B

I looked online via mazdaspeed, and the only part number I could find that said shifter bushing, was M508-17-481A.

However, that's the only one listed. Mazdatrix has two listed, that aren't pulling up anything. I was curious as to if anyone knew the correct mazda part numbers for both of the bushings (upper and lower.) I have one that I just mentioned, but I have no idea if its the upper or lower.
Old 12-18-20, 04:58 AM
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Here are the p/n's:
M505-17-482 Washer Wave
8599-17-482 Washer Wave
M501-17-515 Bush
R503-17-492 Bush Change
R503-17-481 Bush Change
FB01-64-490B Boot (Middle)
R501-17-47Z Boot Dust (Lower)
Old 12-18-20, 09:09 AM
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Originally Posted by Hot_Dog
Here are the p/n's:
M505-17-482 Washer Wave
8599-17-482 Washer Wave
M501-17-515 Bush
R503-17-492 Bush Change
R503-17-481 Bush Change
FB01-64-490B Boot (Middle)
R501-17-47Z Boot Dust (Lower)

Much appreciated! I'm curious as to why mazda has some of those bushings pulling off an FD and an RX-8 though, They don't have it set as mentioning the FC at all. I believe you, its just weird they would have that omitted from their parts catalogue.
Old 12-18-20, 10:51 AM
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Originally Posted by SwappedNA
Much appreciated! I'm curious as to why mazda has some of those bushings pulling off an FD and an RX-8 though, They don't have it set as mentioning the FC at all. I believe you, its just weird they would have that omitted from their parts catalogue.
i'm not exactly sure what you're asking, but the part number for the FC was a kit (8AF1-17-481) which is NLA. however the later cars used individual parts, so we are making the kit after the fact.
and B they can change the part number listings in the catalog, but not the picture.

believe it or not the pictures in the catalog are from a BOOK, which got photographed for microfilm, which is what the average dealership used, and then the microfilm was scanned into the computer. this is why some of the pics are so bad, and also why they are crooked...
Old 12-18-20, 01:19 PM
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Originally Posted by j9fd3s
i'm not exactly sure what you're asking, but the part number for the FC was a kit (8AF1-17-481) which is NLA. however the later cars used individual parts, so we are making the kit after the fact.
and B they can change the part number listings in the catalog, but not the picture.

believe it or not the pictures in the catalog are from a BOOK, which got photographed for microfilm, which is what the average dealership used, and then the microfilm was scanned into the computer. this is why some of the pics are so bad, and also why they are crooked...
I'm aware they scanned and digitized the parts catalogue, and I'm well aware of the frustrations of them being hard to read and crooked haha (no sarcasm, I apologize if it seems that way in context, I don't mean for it to.)

I was curious as to why they didn't issue a supersession part number like they normally do. In my Mazdaspeed account it has one bushing listed, but none of the others, Just seemed odd to me they didn't notate that. But it's trivial at this point. I appreciate you guys chiming in with the part numbers! Hopefully this will populate if someone else has the same concerns in the future.
Old 12-18-20, 02:40 PM
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Originally Posted by SwappedNA
I was curious as to why they didn't issue a supersession part number like they normally do.
there are a lot of Rx7 parts where Mazda USA doesn't have the supersession right, or have the current number.
Old 12-18-20, 04:28 PM
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Originally Posted by SwappedNA
Much appreciated! I'm curious as to why mazda has some of those bushings pulling off an FD and an RX-8 though, They don't have it set as mentioning the FC at all. I believe you, its just weird they would have that omitted from their parts catalogue.
Originally Posted by j9fd3s
i'm not exactly sure what you're asking, but the part number for the FC was a kit (8AF1-17-481) which is NLA. however the later cars used individual parts, so we are making the kit after the fact.
and B they can change the part number listings in the catalog, but not the picture.
I figure since the kit for the FC is NLA as j9fd3s said they may be using parts that are from other newer cars as a substitution. In fact last time I did mine I used this from Amazon for a Miata.
Amazon.com: Dorman 917-551 Manual Transmission Shifter Repair Kit for Select Ford / Mazda / Mercury Models (OE FIX): Automotive Amazon.com: Dorman 917-551 Manual Transmission Shifter Repair Kit for Select Ford / Mazda / Mercury Models (OE FIX): Automotive
. IIRC I used a bottom bushing I had laying around and the top bushing and wave spring from the kit. Shifter was a little tight at first so the bushings might have been a little thicker but 3 years later it's still working fine. The boot is tore of course but the factory ones never last either which is why I won't pay nearly $50 for a Mazda RX7 one if I don't have to. That said part# R501-17-47Z Boot Dust(Lower ) is for a 2006 to2013 Miata and is what I'm going to use in the future as they are about $20 from Jim Ellis Mazda.
Old 12-18-20, 04:40 PM
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Originally Posted by Dak
I figure since the kit for the FC is NLA as j9fd3s said they may be using parts that are from other newer cars as a substitution. In fact last time I did mine I used this from Amazon for a Miata. Amazon.com: Dorman 917-551 Manual Transmission Shifter Repair Kit for Select Ford / Mazda / Mercury Models (OE FIX): Automotive. IIRC I used a bottom bushing I had laying around and the top bushing and wave spring from the kit. Shifter was a little tight at first so the bushings might have been a little thicker but 3 years later it's still working fine. The boot is tore of course but the factory ones never last either which is why I won't pay nearly $50 for a Mazda RX7 one if I don't have to. That said part# R501-17-47Z Boot Dust(Lower ) is for a 2006 to2013 Miata and is what I'm going to use in the future as they are about $20 from Jim Ellis Mazda.
Yeah, it makes sense to use newer ones as a substitution, I suppose it slipped through the cracks and they didn't update the part numbers as being compatible with the car. I haven't opened the center console up yet, I plan on doing that when I get the parts, but I'm imagining based on how it feels the bushings are just gone. Hopefully the boots are okay, but I'm not entirely optimistic, this car is in pretty immaculate shape for its age though, so I may very well be surprised.

Last edited by SwappedNA; 12-19-20 at 11:26 AM.
Old 12-19-20, 10:25 AM
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Originally Posted by Dak
That said part# R501-17-47Z Boot Dust(Lower ) is for a 2006 to 2015 Miata
that one is not a supersession, you can still get the Rx7 one, but the Miata one is functionally the same, and 1/3rd the price
Old 01-10-21, 06:00 PM
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Originally Posted by Dak;12448649 last time I did mine I used this from Amazon for a Miata. [url=https://www.amazon.com/Dorman-917-551-Shifter-Rebuild-Kit/dp/B00BJ4EF0C/ref=sr_1_2?crid=2IHB49FPP37GU&dchild=1&keywords=mi ata+shifter+bushing+kit&qid=1608329137&sprefix=mia ta+shifter+bushing%2Caps%2C836&sr=8-2
Amazon.com: Dorman 917-551 Manual Transmission Shifter Repair Kit for Select Ford / Mazda / Mercury Models (OE FIX): Automotive. IIRC I used a bottom bushing I had laying around and the top bushing and wave spring from the kit. Shifter was a little tight at first so the bushings might have been a little thicker but 3 years later it's still working fine.
Digging this back up because I just replaced the bottom receiver bushing that the lower ball of the shifter goes in with the Mazdatrix one. I also bought the shifter bushings from Mazdatrix while I was at it even though I didn't necessarily need them. I took some measurements while I had them out. The Top bushing in the Miata kit from Amazon is 0.313" thick vs 0.295" for the Rx7 from Mazdatrix. So it is0.018" thicker. Not sure how much difference that 0.018" makes but it was in there about three years. I also had the shims in that Mazdatrix says they throw away so had I left the top one out it might not have felt as tight to begin with. Anyway just throwing this info up here. Use it however you wish.

P.S. also used the cheaper Miata dust seal I mentioned earlier that I got from Jim Ellis Mazda. Worked like a champ.
Old 01-10-21, 07:12 PM
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>>> Digging this back up because I just replaced the bottom receiver bushing that the lower ball of the shifter goes in with the Mazdatrix one.

Are you referring to the shift cup bushing? That is, the bushing where Mazdatrix supplies the installation tool with bushing to install? If so, than how did that work out? Did you have any problems installing that bushing with the shift lever spring still intact?

Also, there are a couple other replacements available. Was wondering if you had you considered either of these bushing replacements:
1) https://lrbspeed.com/product/fc-shif...ng-89-91-only/ or
2) https://www.ebay.com/itm/Mazda-RX7-S...-/324198419018 ?
Old 01-10-21, 07:47 PM
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Originally Posted by Hot_Dog
>>> Digging this back up because I just replaced the bottom receiver bushing that the lower ball of the shifter goes in with the Mazdatrix one.

Are you referring to the shift cup bushing? That is, the bushing where Mazdatrix supplies the installation tool with bushing to install? If so, than how did that work out? Did you have any problems installing that bushing with the shift lever spring still intact?

Also, there are a couple other replacements available. Was wondering if you had you considered either of these bushing replacements:
1) https://lrbspeed.com/product/fc-shif...ng-89-91-only/ or
2) https://www.ebay.com/itm/Mazda-RX7-S...-/324198419018 ?

Looking at the LRB speed link, as well as the ebay one, I didn't know the S5 shifter had that bottom circular bushing. Apparently based on the info on their site, S4's don't have that and just wear out over time. I'm halfway considering getting an S5 shifter, as I don't want to go to all that trouble of putting the fresh bushing parts onto my S4, and realizing it still has some play due to that non replaceable part wearing off.
Old 01-10-21, 11:38 PM
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Originally Posted by Hot_Dog
>>> Digging this back up because I just replaced the bottom receiver bushing that the lower ball of the shifter goes in with the Mazdatrix one.

Are you referring to the shift cup bushing? That is, the bushing where Mazdatrix supplies the installation tool with bushing to install? If so, than how did that work out? Did you have any problems installing that bushing with the shift lever spring still intact?

Also, there are a couple other replacements available. Was wondering if you had you considered either of these bushing replacements:
1) https://lrbspeed.com/product/fc-shif...ng-89-91-only/ or
2) https://www.ebay.com/itm/Mazda-RX7-S...-/324198419018 ?
Yep, that's the one. Since my centering spring seems to have vanished it went pretty well. It It seemed like I didn't have to hammer as much as they did in their video.
I actually didn't know the LRB one existed until I saw your link. The other one looks good but I don't want to drop the trans. As much as I'd like it to center in both directions with 323,xxx miles and a sometimes flaky 3rd gear syncro I don't know if it's worth the trouble.
Old 01-11-21, 07:42 AM
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Originally Posted by Dak
Yep, that's the one. Since my centering spring seems to have vanished it went pretty well. It It seemed like I didn't have to hammer as much as they did in their video.
I actually didn't know the LRB one existed until I saw your link. The other one looks good but I don't want to drop the trans. As much as I'd like it to center in both directions with 323,xxx miles and a sometimes flaky 3rd gear syncro I don't know if it's worth the trouble.
Just FYI...the Ebay vendor (tom.sh) does sell their bushing separately (https://www.ebay.com/itm/Mazda-RX7-S...MAAOSwru1d00c3). LRB $45 vs Ebay (tom.sh) $25.

Last edited by Hot_Dog; 01-11-21 at 08:04 AM.
Old 01-11-21, 09:45 AM
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Originally Posted by Hot_Dog
Just FYI...the Ebay vendor (tom.sh) does sell their bushing separately (https://www.ebay.com/itm/Mazda-RX7-S...MAAOSwru1d00c3). LRB $45 vs Ebay (tom.sh) $25.
Ahh. I see that now, and it has free shipping to boot.
Old 01-11-21, 11:35 AM
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Question, since this part is essentially a wear, non replaceable item on S4 transmissions according to what I've read, would I be able to swap that out for an S5 one when I have the transmission out of the car?
Old 01-11-21, 01:02 PM
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Originally Posted by SwappedNA
Question, since this part is essentially a wear, non replaceable item on S4 transmissions according to what I've read, would I be able to swap that out for an S5 one when I have the transmission out of the car?
Maye be someone knows if the S5 part is interchangeable with the S4 one. Sounds like it would be nice if it is.
Old 01-13-21, 02:15 AM
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Also in taking the materials into endurance and consideration for each. and if using on S4 or S5
LRB - Delrin
Mazdatrix - NYLON CARBON FIBER
OE - oil resistant plastic (but will likely fail again)
Old 01-13-21, 06:10 AM
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Originally Posted by mr_vaughn
Also in taking the materials into endurance and consideration for each. and if using on S4 or S5
LRB - Delrin
Mazdatrix - NYLON CARBON FIBER
OE - oil resistant plastic (but will likely fail again)
Good point to raise. What about NVH associated with delrin vs nylon cf?
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