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The Wavetrac R190 Limited Slip Rear Differential (part number 44.309.170WK), offered through AMS Performance, brings quicker acceleration and faster cornering to the Infiniti Q50 and Q60. It replaces the open factory differential with a gear-type LSD that keeps both rear wheels driving.
What sets Wavetrac apart is its ability to keep biasing torque under zero or near-zero axle load. That condition happens when one drive wheel goes light or lifts in hard cornering, and also during the switch between driving and engine braking. A conventional gear differential loses drive there; the Wavetrac keeps it, so you get on the power sooner and harder.
Wavetrac differentials are built in American plants operating to ISO9002 and TS16949 standards, with tolerances and finish that meet or exceed OEM standards. It is a maintenance-friendly gear-type unit with no clutch packs to wear out.
| Specification | Detail |
|---|---|
| Part number | 44.309.170WK |
| Brand | AMS Performance |
| Product | Wavetrac R190 Limited Slip Rear Differential |
| Part number | 44.309.170WK |
| Type | Gear-type LSD |
| Differential | R190 rear |
| Manufacturing standards | ISO9002, TS16949 |
Will it fit my car?
It is the R190 rear differential for the Q50 and Q60. Call us with your VIN to confirm your differential before ordering.
Does it need clutch rebuilds?
No. It is a gear-type differential with no clutch packs.
Does it need professional installation?
Yes. A differential install should be done by a qualified shop.
Fits Infiniti Q50 and Q60 models sold in the US with the R190 rear differential. Professional installation is recommended. Browse all AMS Performance parts.
Questions about fitment? Call (310) 231-0292 or text (310) 886-3111.
| Year | Make | Model | Chassis | Engine |
|---|---|---|---|---|
| 2016-2024 | Infiniti | Q50 3.0t | V37 | 3.0L VR30DDTT twin-turbo V6 |
| 2017-2022 | Infiniti | Q60 3.0t | CV37 | 3.0L VR30DDTT twin-turbo V6 |
| Year | Make | Model |
|---|
Not sure? Text us your VIN and we’ll confirm.
Shipping: Orders ship via UPS, FedEx or USPS, from our facility near Los Angeles or directly from the manufacturer. Rates for many items are weight-based and shown at checkout. If you need it by a certain date, text us before you order.
Returns: Unused items in brand-new condition and original packaging can be returned within 30 days of the invoice date, with a 25% restocking fee unless otherwise specified. In some cases we can offer a lower fee with the balance as store credit. Shipping charges aren't refundable in either direction unless approved by AutoTalent.
Not returnable: special-order or custom items, and anything that has been installed, modified or altered.
Cancellations: free if the item is out of stock or we miss the ETA you agreed to. Other cancellations carry a 5% processing fee to cover card fees we can't recover. Special-order items can't be cancelled.
Damaged in transit? Report it to the carrier and to us within 48 hours, keep all packaging, and don't send anything back without our written approval.
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