“'Tween:” How to Identify the ZF6HP Series Valve Body that Bridges the 1st & 2nd Generation Designs

The ZF6HP series valve body with an 053 separator plate code could be labeled as a “tween” as well. It has similarities to the early Generation 1 ZF6HP19/26/32 valve bodies, but also some significant differences that could cause rebuild problems if not noticed. And while this 053 plate version also has features seen on the updated Generation 2 ZF6HP21/28/34transmissionunits that are equipped with higher torque capacity, improved acceleration, quicker shift timing, etc., it did not skip a grade and make that leap, as it still has the basic functionality of a Gen. 1.

Since this awkward valve body is stuck in the middle, not fitting the mold of either an early or late OE design, extreme care should be taken when attempting any repairs. Existing fixes are readily available for it and easy to install, providing a significant cost savings over an OE remanufactured valve body. However, the location of particular valves and some of the valve designs themselves are different from Gen. 1 and Gen. 2, so verify proper location and interchangeability of any products before altering the core in any permanent way.

早期识别“补间”ZF6HP阀体对于成功重建至关重要。这种特殊的阀体最常见于美丽而昂贵的7系列BMW。通过参考分离板上标记的码和数量，阀体芯的识别最简单，这将是A053，B053和1068-327-189。

ZF6 053分离板

另一个快速识别方法是通过measuring the OE pressure regulator sleeve, as it is different from both the Gen. 1 and Gen. 2 designs. OE exploded views found in Sonnax Zip Kit instructions can further aid in distinguishing the differences between Gen. 1, Gen. 2 and the “tween” Gen. 1 valve bodies with 053 separator plate codes. These provide detailed views of valve design and location so that differences and similarities across valve body types can be seen. See theZF6 identification guidefor details on how to measure the valves and the Zip Kits available for all three valve bodies.

This chart indicates the bore location in the various valve body types for ease in locating particular valves.

ZF6 Series Valve Body Valve Locations
Valve Description	Valve Body Type
	Gen.1，M转移	Gen. 1, E-Shift	053 Code, E-Shift	Gen. 2, M-Shift	Gen. 2, E-Shift
Manual Valve	101.	-	-	101.	-
停车锁阀	-	101.	101.	-	101.
Park Lock Cylinder	-	109.	109.	-	109.
Lubrication Control Valve	102.	102.	102.	102.	102.
Converter Release Regulator Valve	103.	103.	103.	103.	103.
Bypass Clutch Control Regulator Valve	105.	105.	105.	105.	105.
Clutch Cooling Valve	-	-	-	106.	106.
Main Pressure Regulator Valve	104.	104.	104.	104.	-
Solenoid Pressure Regulator Valve	113	113	113	201	201
离合器闩锁阀	116	116	116	116	116
Clutch B Latch Valve	115	115	114	-	-
离合器D1闩锁阀	112	112	110	110	110
Clutch D2 Latch Valve	203.	203.	201	113	113
Clutch E Latch Valve	106.	106.	106.	202.	202.
Clutch A Control Pressure Regulator Valve	108.	108.	108.	108.	108.
离合器B调节阀	201	201	115	115	115
Clutch C Regulator Valve	204.	204.	205.	114	114
Clutch D1 Control Pressure Regulator Valve	205.	205.	204.	204.	204.
Clutch D2 Regulator Valve	202.	202.	202.	112	112
Clutch E Control Pressure Regulator Valve	107.	107.	107.	107.	107.
Delay Accumulator Piston	109.	-	-	-	-
Solenoid Multiplex Valve	110	110	-	-	-
Drive Enable Valve	111	111	-	-	-
Shift Valve 3	-	-	-	205.	-
Shift Valve 2	-	-	111	203.	203.
Shift Valve 1	-	-	112	111	111
Position Valve D	-	-	203.	-	-
Position Valve	-	-	-	-	205.

It's What's on the Inside that Counts

When my daughter was struggling with the awkwardness of her middle school years, I gave her a bracelet with a hidden message. This ZF6HP “tween” valve body can be an easy rebuild and money in the bank if you keep that same thing in mind and pay close attention to the details of what’s on the inside.

Maura Stafford is a Sonnax product development manager for transmission components and remanufactured valve bodies. She is a member of the SonnaxTASC Force(Technical Automotive Specialties Committee), a group of recognized industry technical specialists, transmission rebuilders and Sonnax Industries Inc. technicians.