SKU: 45804679033

034Motorsport Transmission/Differential Mount, Density Line, Early Audi To 1996 Track Density - 034-509-4012-TD

Sale price$76.49 Regular price$84.99
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Description

034Motorsport Transmission/Differential Mount, Density Line, Early Audi To 1996 Track Density - 034-509-4012-TD034 Motorsport Transmission Differential Mount, Density Line, B3 Audi 80 90 Coupe Quattro, Audi UrQuattro, Audi 4000 5000, Audi 100 200, and Audi S2 RS2 034 509 4012 TD We're proud to announce the availability of our Density Line Performance Differential Transmission Mounts for most early Audi applications, including the B3 Audi 80 90 Coupe Quattro, Audi UrQuattro, Audi 4000 5000, Audi 100 200, and Audi S2 RS2! 034Motorsport's Density Line Mounts are

034 Motorsport - Transmission/Differential Mount, Density Line, B3 Audi 80/90/Coupe Quattro, Audi UrQuattro, Audi 4000/5000, Audi 100/200, and Audi S2/RS2 - 034-509-4012-TD 

We're proud to announce the availability of our Density Line Performance Differential/Transmission Mounts for most early Audi applications, including the B3 Audi 80/90/Coupe Quattro, Audi UrQuattro, Audi 4000/5000, Audi 100/200, and Audi S2/RS2!

034Motorsport's Density Line Mounts are the new standard in comfort and performance. Our mounts are redesigned with performance in mind, and manufactured from high-durometer rubber for increased performance and durability, without sacrificing comfort. Density Line Mounts are void-free and fluid-free, eliminating the slop associated with the factory mounts.

Street Density:

The Street Density Differential/Transmission Mount is manufactured from 50 durometer rubber, which is approximately 30% stiffer than stock.

The result is greatly reduced drivetrain slop, crisper shifting, and minimal wheel hop, without any significant increase in noise, vibration, or harshness (NVH) inside of the cabin. These mounts are a completely re-engineered performance solution, not just inserts for use with the factory mounts.

Track Density:

The Track Density Differential/Transmission Mount is manufactured from 80 durometer rubber, which is approximately 90% stiffer than stock.

The result is a locked-down drivetrain, solid shifting, and virtually no wheel hop. Track Density Mounts will cause a noticeable increase in noise, vibration, and harshness (NVH) inside of the cabin.

Features:

  • Manufactured from High Durometer Rubber
  • Includes New High-Grade Metric Hardware
  • Reduced Drivetrain Slop
  • Decreased Differential/Transmission Movement Under Load
  • More Direct Power Transfer
  • Improved Shifting Feel
  • Complete Drop-In Replacement of Factory Differential/Transmission Mounts
  • Sold Individually

Fitment:

  • B3 Audi 80/90/Coupe Quattro
  • Audi UrQuattro
  • Audi 4000/5000
  • Audi 100/200
  • Audi S2/RS2
    • Only replaces factory transmission mounts on later B4 chassis vehicles which use the B4/B5 style rear differential mounts.
Replaces: 
  • 857 599 431 / 857599431
  • 431 399 151D / 431399151D
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 45804679033

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Jodi Cook
Massapequa, US
★★★★★ 3
Just Ok.
Size: 4 pcs: 15.7*5.7, Color: Maple Wood, Size: 4 pcs: 15.7*5.7, Color: Maple Wood
They look nice but they aren’t sturdy and do not hold much weight. I’ve bought better ones on Amazon.
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Reviewed in the United States on January 12, 2026
M
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Mrs. Buyer
Natrona Heights, US
★★★★★ 5
Worth
Size: 6 pcs: 15.7*5.7, Color: White
Really good wall amounts. I used the drywall anchors and it feels sturdy. I put like a 3 pound Crystal on it and it’s holding perfectly fine. I also was able to paint them with no problem would buy again.
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Reviewed in the United States on January 13, 2026
M
Verified Purchase
Mariah
Omaha, US
★★★★★ 5
Beautiful shelves!
Size: 48 Inch, Color: Natural, Size: 48 Inch, Color: Natural
Since new build homes typically don't come with towel rods this was what I envisioned instead. I purchased the hooks separately. The shelves are perfect! I ordered a 36in set as you see with the cream towels and a 48in set that you see with the green towels. They're not loose but not 100% sturdy. I recommend maybe gluing to the wall in addition to the rest and definitely screwing into a stud. They're easy enough to figure out without the instructions. But I will say they're supposed to be screwed in underneath to the rods but they did not come with an appropriate screw for that so I had to use some I already had on hand.
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Reviewed in the United States on May 20, 2025
Verified Purchase
2089991211
Lowell, US
★★★★★ 5
Nice
Size: 30 Inch, Color: Natural, Size: 30 Inch, Color: Natural
Easy to install..comes with small magnetic leveler which made things even easier! Really nice for the price. Only thing is other than sliding the wood onto the metal brace, there’s only 2 screws that screw wood onto brace so it makes for a slightly wobbly shelf on the brace… although I have 6 screws/anchors holding each brace into the wall so it’s technically quite solid…I’m a bit nervous to keep delicates on the shelves
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Reviewed in the United States on February 16, 2025
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Verified Purchase
Linda M
Pawtucket, US
★★★★★ 5
Great Shelves! Drywall Anchors are the Bomb!
These shelves are very plain as I hoped they would be so as to not take away from the items displayed. The blue is true to the images so I was impressed by that. Word of knowledge: if you do not hit any studs, don’t use the mollies that came with them; use plastic drywall anchors! They work amazingly well!
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Reviewed in the United States on May 27, 2026

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