When you're dealing with seals, gaskets, and O-rings, a power steering reservoir that weeps fluid can leave a mess on the shop floor and make you wonder if the whole reservoir needs to be replaced. Often, the real culprit is a small gasket that costs a few dollars. If you drive a Kenworth T660 or Peterbilt 379, the Automann 575.1078.2 replacement gasket is one of those inexpensive parts that could solve the leak without swapping the entire reservoir.
Quick Verdict
The Automann 575.1078.2 is a new replacement gasket for a power steering reservoir. It is priced at $4.95 and comes as a single unit. The part cross-references to NMCQ79699, Q79699, and FGQ79699, and it appears in Automann's 575.1078CK cover kit, so it is designed to work with the company's reservoir assemblies. Fitment is listed for Kenworth T660 and Peterbilt 379, with no year range given.
Who It Suits
This gasket is for owners of Kenworth T660 or Peterbilt 379 trucks who need a sealing ring for a power steering reservoir. It also makes sense if you are rebuilding an Automann reservoir that calls for the 575.1078.2, or if you already have a cover kit and need a spare gasket. It is not a universal part, so it suits someone who can match their existing part number or reservoir style.
What Stands Out
The gasket is tied to a specific family of Automann components. It is not an isolated piece; the same gasket is used in the 575.1078CK cover kit and relates to the 575.1027 and 575.1028 reservoirs. That tells you it is a deliberate part of those assemblies. The cross-reference numbers give you more ways to match it to a Q79699 or FGQ79699 application. The New condition and single-unit packaging are simple and straightforward.
Meaningful Trade-Offs
The main limitation is fitment. The application list covers Kenworth T660 and Peterbilt 379, but no years are stated. Peterbilt 379 and Kenworth T660 have had multiple reservoir designs, so you need to verify that your truck actually uses this gasket. Also, this is just the gasket, not the reservoir cover or the reservoir itself. You will need to pair it with the correct cover and install it properly to avoid leaks. The low price makes it easy to buy, but a mismatched gasket means downtime.
Bottom Line
If you are replacing a power steering reservoir gasket on a Kenworth T660 or Peterbilt 379 and your part number lines up with 575.1078.2 or Q79699/FGQ79699, the Automann gasket is a simple, low-cost part to try. Just confirm your truck's reservoir style before ordering.
Product Note
Automann 575.1078.2 Power Steering Reservoir Replacement Gasket
This gasket is the sealing piece inside Automann's 575.1078CK cover kit, which is a strong signal that it matches the reservoir family it was made for. The main thing to watch out for is that the fitment list names Kenworth T660 and Peterbilt 379 with no year range, so you need to verify your specific truck before you buy.
