Description J160 gearbox – mechanical speedo drive kit The J160 / Toyota AZ6 models of gearbox are originally fitted with an electronic speedo drive sender module. However most of the cars these gearboxes are retro-fitted into require a mechanical unit to run the original speedo drive cable. This problem is easily solved with our mechnical speedo drive kit. With all new parts this kit is a direct replacement of the original drive unit and uses the Toyota standard sized threaded output. This is the output as used on all W5x and T50 gearboxes. Parts supplied – Speedo drive housing: Pre-fitted with the gear of choice. – Retainer tab – Retainer bolt NOTE: For those who only wish to buy the gear / shaft combination or the housing alone then this is possible to do so for half of the advertised price. Use the comments box during the checkout to leave a note with the relevant request and then make the purchase with the full payment. When the order is packed and processed a partial refund will be manually made for the payment difference. Part identification / compatibility There are two types of internal drive gears as used in the J160 gearbox. To determine which is fitted remove the existing speedo drive unit and either count the teeth or examine the writing on the bottom face of the plastic gear. – Existing drive gear teeth- 32T / 33T : Only 31 to 33 teeth drive gears can be interchanged. – Existing drive gear teeth- 35T: Only 34 to 36 teeth drive gears can be interchanged. – Housing outer diameter: 34mm – New thread size for speedo cable coupling: M22 x 1.5mm (Common to all Toyota mechanical speedos) Parts options Below are the different options of gears as fitted to the speedo drive unit. They are listed in the estimated relation to the diff ratio as used on the vehicle, however this can only be used as a rough guide as it will change pending on the accuracy of the dash speedo unit, rolling tyre diameter and so on. For any resulting inaccuracy or for those using a diff ratio not listed a speedo correction module is suggested. One method is to compare the measured speed from a GPS against the cars reading, work out the percentage of inaccuracy and order the correct ratio correction module to suit. When using a 185 / 60 / 14″ tyre – rough guide only: – 31 Teeth: Suits a 3.63:1 diff ratio – 32 Teeth: Suits a 3.7:1 diff ratio – 33 Teeth: Suits a 3.9:1 diff ratio – 35 Teeth: Suits a 4.1:1 diff ratio – Suits some gearboxes only– see parts compatibility.
