B4 Servo Update Kit Aftermarket
Aftermarket - 30751262 - 140555
- IPD Item Number: 140555
- Brand: Aftermarket
- Quality Level: Good (aftermarket)
- Units Per Car: 1
- OE Reference: 30751262
- Product Group: Repair & maintenance
- Specifications: AFTERMARKET VERSION
- Cross Reference: 30651771, 30751262, 32253002001
Product Attributes
- IPD Item Number: 140555
- Brand: Aftermarket
- Quality Level: Good (aftermarket)
- Units Per Car: 1
- OE Reference: 30751262
- Product Group: Repair & maintenance
- Specifications: AFTERMARKET VERSION
- Cross Reference: 30651771, 30751262, 32253002001
Product Information
Description
It's ironic how this inexpensive part can save someone from a costly transmission replacement.
The early AW55-50/51SN five speed automatic transmissions have an issue with shift “flares” and other odd symptoms related to shifting in and out of 3rd gear. This usually reveals itself by a “missed” shift (somtimes called "shift flare") from 2nd to 3rd gear on a random basis.
This B4 servo cover update can solve these symptoms in many cases. Other times, it may take a software update or the flare problem has gone on too long and the transmission valve body is physically damaged. It is possible for transmission damage to occur when the transmission engages harshly after a flare condition under heavy load.
Volvo has changed the design of the B4 servo cover multiple times and there are numerous Volvo service bulletins regarding it. The latest design is stock on later model years.
We highly recommend a transmission software upgrade prior to or in conjunction with the B4 servo cover update! A fluid flush would also be an excellent idea.
The software for these electronically controlled transmissions has gone though many version changes over the years and has become much more refined. A software upgrade can significatly reduce neutral to drive delays, shift flare and improve adaptive shift functionality. If your car still easily rolls backwards when in drive while facing up hill on a slight slope, then you most likely need a software upgrade. The neutral-at-a-stop while in Drive "feature" was removed with later software versions because it can cause damage when the transmission engages hard. Recent software versions will also roll backwards but not freely (not like the car is in neutral.)
Transmission software upgrades must be done with a Volvo specialty shop using Volvo's VIDA application.
The B4 Servo issues usually don't affect 2004 and newer models, but some of these cars still have a variety of shifting issues that can be solved in many cases by a transmission software upgrade.
About Aftermarket
Aftermarket parts are a reasonably priced and good alternative to OE products. We often supply aftermarket products in place of OE parts that are no longer available as well.
Some items will be better than stock or considered an upgrade from the OE design in the aftermarket brand.
Other items will work as a less expensive alternative to stock.
We will not sell a product that we do not believe in, so rest assured you are fine with the aftermarket brand in most applications!
If you have any questions, contact our customer service team to advise on the best aftermarket products for your Volvo.
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Policies & Warranty
A Core Charge is a refundable deposit added to the price of a product by a manufacturer as a bounty to encourage the return of rebuildable cores.
Cores must be complete (mostly assembled and not missing parts) to qualify for refund.
Cores must be complete returned in the manufacturer's box with part number markings to qualify for refund. Typically, the core is returned in the box that contained the replacement product.
Core return and any shipping associated with it is the customer's responsibility.
Available to Order means the item is readily available from one or more supplier warehouses and should be available to ship within a timely manner (unless otherwise noted on the product listing.)
Products from major brand names like Volvo Genuine, Bosch, Mahle, Aisin, etc. are almost always in stock in the manufacturer’s domestic warehouse. These suppliers have good fill rates, but even if they are out of stock, we may be able to source it from a variety of alternative source. We are at the most 10 days away from all those warehouses, usually much less. Does that mean we will always have your product available within that window? Honestly, no. There are many factors that can delay things by a few days but we’ll do everything we can to fulfill your order in a timely manner.