Zimmermann Brake Disc Set (2 pcs) 400.3684.20
Part No. 400.3684.20
Check this part fits your car
Select your vehicle and we will confirm it against the 19 variants listed for this part.
$618.00
incl. GST
Front axle
375 x 36 mm
Fits 19 vehicle variants
Returned items must be unused and in the original unopened packaging. Return postage is paid by the buyer.
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Technical specification
Stud holes5
Height54 mm
Part weight14.7 kg
Disc typeCross-drilled, Internally vented
Thickness when new36 mm
Minimum (discard) thickness33.4 mm
Hole pattern8/5
Iron gradeHigh-carbon cast iron
Outside diameter375 mm
Centre bore67 mm
Stud circle (PCD)112 mm
Surface finishCorrosion-protective coating
OE & OEM cross-reference
Supplier part number
400.3684.20
Fits OE / OEM numbers
166 421 09 12
A 166 421 09 12
1664210912
A1664210912
166 421 16 00
A 166 421 16 00
1664211600
A1664211600
Vehicle fitment
19 variants
| Make & model | Chassis | Variant | Years | Power |
|---|---|---|---|---|
| MERCEDES-BENZ GL-Class | X166 | GL 350 CDI / BlueTec 4-matic (166.823, 166.824) | 2012–2015 | 190 kW |
| MERCEDES-BENZ GL-Class | X166 | GL 500 4-matic (166.873), GL 550 4-matic (166.873) | 2012–2015 | 320 kW |
| MERCEDES-BENZ GLE | W166 | 250 d 4-matic (166.004), 300 d 4-matic (166.004) | 2015–2018 | 150 kW |
| MERCEDES-BENZ GLE | W166 | 350 d 4-matic (166.024) | 2015–2018 | 190 kW |
| MERCEDES-BENZ GLE | W166 | 400 4-matic (166.056) | 2015–2018 | 245 kW |
| MERCEDES-BENZ GLE | W166 | 500 4-matic (166.073), GLE 550 4-matic (166.073) | 2015–2018 | 320 kW |
| MERCEDES-BENZ GLE | W166 | 500 e 4-matic (166.063), 550 e 4-matic (166.063) | 2015–2018 | 325 kW |
| MERCEDES-BENZ GLE | W166 | 63 AMG S 4-matic (166.075), AMG 63 S 4-matic (166.075) | 2015–2018 | 430 kW |
| MERCEDES-BENZ GLE | W166 | AMG 43 4-matic (166.064) | 2017–2018 | 287 kW |
| MERCEDES-BENZ GLE Coupe | C292 | 450 AMG 4-matic (292.364), 450 Sport AMG 4-matic (292.364) | 2015–2019 | 270 kW |
Product overview
Zimmermann 400.3684.20 is a pair of cross-drilled, internally vented brake discs (rotors). Each disc is 375 mm in diameter and 36 mm thick when new, with a 54 mm hat height. The minimum (discard) thickness is 33.4 mm. Each disc has 5 stud holes on a 112 mm stud circle (PCD), with a 67 mm centre bore. The discs are coated for corrosion protection and made from high-carbon cast iron. Cross-referenced to Mercedes-Benz OE A 166 421 09 12 and 1 other OE number. Confirmed to fit 19 Australian-market variants; the full list is in the fitment table on this page.
