6HP is ZF Friedrichshafen AG's trademark name for its six-speed automatic transmission models (6-speed transmission with Hydraulic converter and Planetary gearsets) for longitudinal engine applications, designed and built by ZF's subsidiary in Saarbrücken. Released as the 6HP26 in 2000, it was the first six-speed automatic transmission in a production passenger car. Other variations of the first generation 6HP in addition to the 6HP26, were 6HP19, and 6HP32 having lower and higher torque capacity, respectively. In 2007, the second generation of the 6HP series was introduced, with models 6HP21 and 6HP28. A 6HP34 was planned, but never went into production. The 6HP uses a Lepelletier epicyclic/planetary gearset, which can provide more gear ratios with significantly fewer components. This means the 6HP26 is actually lighter than its five-speed 5HP predecessors. It also has the capability to achieve torque converter lock-up on all six forward gears, and disengage it completely when at a standstill, dramatically closing the fuel efficiency gap between automatic and manual transmissions. The last 6HP automatic transmission was produced by the Saarbrücken plant in March 2014 after 7,050,232 units were produced.[1][2] The ZF plant in Shanghai continued to produce the 6HP for the Chinese market.[1] Specifications[edit]Preliminary Note[edit]All ZF 6HP gearboxes have the same gear ratios as the 6R60 and 6R80 gearboxes for passenger cars from Ford have. Deviant gear ratios indicate another manufacturer as shown in the template. New Paradigm[edit]The 6HP is the first transmission designed according to ZF's new paradigm. After gaining additional gear ratios only with additional components, this time the number of components has to decrease for the first time in spite of the necessity of even more ratios. Coming from 5 gear ratios made of 10 main components (gear sets, Ravigneaux considered as 2, brakes, clutches) to the 6 made of 8 now reflects, what major progress the Lepelletier gear mechanism means compared to conventional designs like the 5HP-family. Technical data[edit]
Technical imperfections[edit]Problems with this transmission are well known[citation needed]. This transmission locks up the torque converter in all gears, increasing wear. Combined with a sealed transmission pan and "lifetime fluid", some people have experienced catastrophic transmission failure. Owners report shift issues when oil begins breaking down beyond 50K miles, hence shifting issues are common[citation needed]. There are also problems with the valve block and solenoids[citation needed]. When this failure starts to occur, shift quality and speed, torque transfer and even loss of ability to engage gears can occur. These problems led Volkswagen AG to extend the warranty on all of their vehicles equipped with this transmission to 100,000 miles or 10 years[citation needed]. First generation[edit]6HP19[edit]The 6HP19 transmission was a development of the original 6HP26, but was downgraded for less demanding applications. As such, the 6HP19 is rated at 400 N⋅m (295 lb⋅ft) of torque. Applications Rear-wheel drive cars:
6HP19A[edit]The 6HP19A is a variation of the 6HP19 for four-wheel drive applications torque of 600 newton-metres (443 lbf⋅ft). It was used by the Volkswagen Group for some permanent four-wheel drive models. Applications
6HP26[edit]The 6HP26 was the original variation of the 6HP, released in 2000. It was rated for a maximum input torque of 600 newton-metres (443 lbf⋅ft). It was first used by the BMW 7 Series (E65) in 2001. Initially only used by premium brands, it was later available on the 2009 model year V8 Hyundai Genesis. Several versions of the 6HP26 are available depending on application and brand: 6HP26, 6HP26A and 6HP26X. Applications Ford has developed their own versions (6R60 and 6R80) based on the 6HP26. Therefore, certain Ford vehicles will not be listed. Two-wheel drive version:
6HP26A[edit]The 6HP26A is a variation of the 6HP26 for four-wheel drive applications. It was used by the Volkswagen Group for some permanent four-wheel drive models and packages a TORSEN type center differential, and open front differential into the transmission assembly. Applications
6HP26X & 6HP26Z[edit]The 6HP26X and 6HP26Z is another variation of the 6HP26, also for four-wheel drive applications. This transmission is suitable for 4WDs with a separate transfer box (the "X" stands for external 4WD). Applications
6HP32[edit]The 6HP32 is a variation of the 6HP26 for high-output applications. The gearbox's maximum input torque is 750 N⋅m (550 lb⋅ft).[11] Applications
Second generation[edit]6HP21[edit]The 6HP21 was a variation of the 6HP produced in the PRC.[2] It is also alternatively known as 6HP19tu and 6HP19z. Applications
6HP28[edit](also known as BMW GA6HP26Z) The 6HP28 was the second generation of the 6HP gearbox, introduced in mid-2006. The 6HP28 is rated for a maximum input torque of 700 newton-metres Applications Two-wheel drive version:
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References[edit]
What transmission does a 2007 BMW 335i have?The 335i comes with a 6-speed manual transmission, which, in BMW fashion, is quite good. A 6-speed automatic with steptronic manual shifting is optional, with 50-percent-quicker reactions than before.
Is the 335i automatic transmission good?Yes, the 335i's ZF-sourced six-speed automatic is among the world's very best transmissions, and we can't heap enough praise on it. Responsive and quick to act, it is the perfect autobox for this kind of car. In normal automatic mode, shifts are virtually invisible, but the character changes dramatically when prompted.
How much does it cost to rebuild a BMW transmission?It can easily cost anywhere from $1,800 to $5,000 to repair a BMW transmission. The price is high but justifiable when you know how essential the transmission is.
Does 335i have DCT?No DCT on saloon, touring.
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2007 bmw 335i transmission 6 speed automatic
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