SL/R129: Alternatives to NLA fuel level sender?
Thread Starter
Newbie
Joined: Jan 2011
Posts: 3
Likes: 1
From: North of Seattle, WA
76 w115/om616, 90 w124/om602, 91 r129/om602, 93 Jeep XJ, 08 w211/om642
Alternatives to NLA fuel level sender?
Hi all.
Anyone have specs for various older fuel tank sending units? Length (for tank depth), resistance range, size of screw-in head?
With the pre-1998 r129 fuel level sender NLA, and even used ones going for $400 USD, I was wondering whether there are any other senders that might easily be retrofitted into my r129. I think the head (where it screws into the tank) is the same style/size/thread across quite a few models (e.g. w126, r107, w124, w140). The w124/w140 unfortunately have a 45 degree angle, whereas the r129 is straight. But the 126 and 107 look like the same design from catalog pictures, just with a different connector. Adapting the connector should be easy, and these models seem to be available new from aftermarket (unlike r129).
Thanks!
-Bruce
Anyone have specs for various older fuel tank sending units? Length (for tank depth), resistance range, size of screw-in head?
With the pre-1998 r129 fuel level sender NLA, and even used ones going for $400 USD, I was wondering whether there are any other senders that might easily be retrofitted into my r129. I think the head (where it screws into the tank) is the same style/size/thread across quite a few models (e.g. w126, r107, w124, w140). The w124/w140 unfortunately have a 45 degree angle, whereas the r129 is straight. But the 126 and 107 look like the same design from catalog pictures, just with a different connector. Adapting the connector should be easy, and these models seem to be available new from aftermarket (unlike r129).
Thanks!
-Bruce
Newbie
Joined: Nov 2017
Posts: 1
Likes: 1
2007 S550
Hi all.
Anyone have specs for various older fuel tank sending units? Length (for tank depth), resistance range, size of screw-in head?
With the pre-1998 r129 fuel level sender NLA, and even used ones going for $400 USD, I was wondering whether there are any other senders that might easily be retrofitted into my r129. I think the head (where it screws into the tank) is the same style/size/thread across quite a few models (e.g. w126, r107, w124, w140). The w124/w140 unfortunately have a 45 degree angle, whereas the r129 is straight. But the 126 and 107 look like the same design from catalog pictures, just with a different connector. Adapting the connector should be easy, and these models seem to be available new from aftermarket (unlike r129).
Thanks!
-Bruce
Anyone have specs for various older fuel tank sending units? Length (for tank depth), resistance range, size of screw-in head?
With the pre-1998 r129 fuel level sender NLA, and even used ones going for $400 USD, I was wondering whether there are any other senders that might easily be retrofitted into my r129. I think the head (where it screws into the tank) is the same style/size/thread across quite a few models (e.g. w126, r107, w124, w140). The w124/w140 unfortunately have a 45 degree angle, whereas the r129 is straight. But the 126 and 107 look like the same design from catalog pictures, just with a different connector. Adapting the connector should be easy, and these models seem to be available new from aftermarket (unlike r129).
Thanks!
-Bruce
Newbie
Joined: Jul 2025
Posts: 1
Likes: 0
Hi all.
Anyone have specs for various older fuel tank sending units? Length (for tank depth), resistance range, size of screw-in head?
With the pre-1998 r129 fuel level sender NLA, and even used ones going for $400 USD, I was wondering whether there are any other senders that might easily be retrofitted into my r129. I think the head (where it screws into the tank) is the same style/size/thread across quite a few models (e.g. w126, r107, w124, w140). The w124/w140 unfortunately have a 45 degree angle, whereas the r129 is straight. But the 126 and 107 look like the same design from catalog pictures, just with a different connector. Adapting the connector should be easy, and these models seem to be available new from aftermarket (unlike r129).
Thanks!
-Bruce
Anyone have specs for various older fuel tank sending units? Length (for tank depth), resistance range, size of screw-in head?
With the pre-1998 r129 fuel level sender NLA, and even used ones going for $400 USD, I was wondering whether there are any other senders that might easily be retrofitted into my r129. I think the head (where it screws into the tank) is the same style/size/thread across quite a few models (e.g. w126, r107, w124, w140). The w124/w140 unfortunately have a 45 degree angle, whereas the r129 is straight. But the 126 and 107 look like the same design from catalog pictures, just with a different connector. Adapting the connector should be easy, and these models seem to be available new from aftermarket (unlike r129).
Thanks!
-Bruce
Did you get any answers to your questions on alternatives? Resistance, screw size?
Thanks
Thread Starter
Newbie
Joined: Jan 2011
Posts: 3
Likes: 1
From: North of Seattle, WA
76 w115/om616, 90 w124/om602, 91 r129/om602, 93 Jeep XJ, 08 w211/om642
Unfortunately, no.
I ended up eventually buying a used r129 one off ebay.
Still would love to collect that info. If I run across any others, I'll make notes. If I get enough data, I'll post something on the site.
I ended up eventually buying a used r129 one off ebay.
Still would love to collect that info. If I run across any others, I'll make notes. If I get enough data, I'll post something on the site.
