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The Volvo Parts, Accessories &
Performance Specialists Since 1963

Genuine Volvo Haldex 4 AOC (Active On-Demand Coupling) Oil Pump

Genuine Volvo - 31256757 - 235089

IPD Item Number
235089
OEM Reference
31256757
Brand
Genuine Volvo
Mfr Part Number
31256757
Brand Classification
OEM
Product Group
REPAIR & MAINTENANCE
Quality Level
BETTER (OE EQUIVALENT)
Units Per Car
1
Cross Reference
31256757, 31259349, DS119863, LR075763

Product Description

Description

If your AWD P3 Volvo has unexpectedly left you stranded in slippery conditions, it's possible your car's AWD needs service.

AWD Volvos from 2003 and up (like the S60R/V70R, XC70, XC90, and AWD versions of the S60/V70 and S40/V50) use a system called Haldex to engage the rear wheels when the front wheels start to slip.


A cutaway diagram of the Active On-Demand Coupling

This Haldex system relies on a multi-plate clutch in the rear of the car, also called the Active On-Demand Coupling (AOC). When the system detects front wheel spin, valves open and allow pressurized oil to clamp the clutch down, hooking up the rear wheels and getting you moving again.

The system relies on oil pressure as high as 80 bar (1100psi!) to cycle the hydraulic clutch, and just like any system that pumps oil around, regular filter and fluid changes are recommended. For Haldex, we suggest changing the fluid and filter every 50,000 miles


A clogged (and failed!) Haldex pump

If fluid changes are neglected and the filter gets clogged, the Haldex pump has to work harder and harder until it eventually burns out: you'll suddenly get lots of front wheel spin, and when scanned the car will have pump error codes from the DEM, such as DEM-0006.

This Genuine Volvo pump kit includes a new pump and new allen bolts, and is perfect for getting all four of your P3's wheels spinning again.

About Genuine Volvo

Everything IPD supplies under the "Genuine Volvo" designation are the factory original Volvo parts. These are the same parts that Volvo used to manufacture your vehicles on the assembly line. All Volvo supplied Genuine Volvo parts are made to specifications by Volvo and under their strict quality control guidelines. Our customers should expect the same high-quality when purchasing Genuine Volvo products which in the past were exclusively available as dealer only items. Volvo relies on other high-quality OEM manufactures such as Lemforder, BehrSachs, Bosch, Valeo, Siemens, VDO, Corteco, and many more to maintain its dedication to quality and safety.

In 2017, IPD announced that it was the exclusive North American distributor for Genuine Classic Volvo parts. We are proud of our Volvo heritage dating back to 1963, a reputation that is unmatched by others in the industry.

Many may not know this but Volvo in Latin roughly translates to "to roll".  The company was founded back in 1927 by Assar Gabrielsson and Gustaf Larsson as a spin-off from ball-bearing manufacturer SKF.  While the Volvo logo looks like the biology symbol for male, it's really the Swedish symbol for Iron. With a nod to its heritage in alloys, Volvo chose a logo that depicted a ring bisecting at one o’clock. Today Volvo is known around the world as one of the most iconic brands known for safety, longevity, and its enthusiast following.

IPD has been proudly serving the Volvo community since 1963. We are motivated to be the very best destination for your Volvo needs. Our customer and vehicle first approach means that your experience is our first priority. We have truly hassle-free returns, an in depth Volvo blog, and provide DIY Volvo guides and videos for many of our products.

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IPD is the Volvo Parts, Accessories and Performance Specialists Since 1963.

We offer a wide variety of high quality replacement, maintenance and restoration car parts plus our own line of heavy duty and performance products. Our custom built online parts catalog features Genuine, OE, OES, OEM, Aftermarket and IPD branded replacement auto parts.

Combine our unmatched 50+ year reputation with our outstanding customer service team and you can be confident we'll be here to serve your Volvo needs long in to the future. Not many others can match our knowledge and dedication to providing the very best customer service in the market. We have a physical location, live customer service agents you can call and extensive inventory so we can ship products to you quickly. Our customer and vehicle first approach means that your experience is our first priority. We have truly hassle-free returns and provide do-it-yourself (DIY) guides and videos for many of our products.

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