Brake Servo Unit
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LabelPart NamePart No.
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1Servo assembly MK1/2 ‘S’ - (Remote Type 51/2)21A1293
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1Servo and universal bracket and hose kit - (Remote type)SEN43
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2Servo repair kit - 63/4” diaphram with 2.4” central hole18G8938
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3Non return valve on 21A1293 servo - (Remote type) - Original17H2646ORIGINAL
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4Non return valve on 13H7939 servo - (Remote type)606030A
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5In-line non return valve17H2646
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6Air valve cover and filter - (Remote type) was 37H3812LK11032
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8Brake servo hose, per foot - (Remote Type)SPL116
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9Pair of original servo brackets for 21A1293 - (Remote type)21A1294
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9Pair of original servo brackets for 13H7939 - (Remote type)21A2254
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10Servo - (Non remote type) attached to master cylinderGSM119
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11Repair kit- (Non remote type) attached to master cylinderGSM120
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13Grommet pipe to servoNAM8569
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14Servo fitting kit for 13H7939 to all Minis - (Remote type)MSSK007

Guide to Type of Servo and Kit Required.
Part No | Description | Qty | Comments |
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18G8189 | 7" Diaphram with 0.5625" central hole | 1 | For 21A1293 known as 5 1⁄2”” servo |
18G8189 | 6.75" Diaphram with 2.4" central hole | 1 | For 13H7939 known as type 6 servo |
Note: For hose No12. we have been supplying customers with 1 x 17H2646 valve and a length of SPL116 hose as required.