Blackline HLF150 C510 Gearbox Helical Gear LSD

In stock
ex vat
Regular price $594.00


  • Type Helical Gear Limited Slip Differentials
  • Brand Blackline
  • MPN HLF150
  • Torque biasing helical geared
  • Optimised for even load distribution
  • Direct replacement for stock differential
  • Increased & controlled grip on power delivery
  • Minimum servicing required

C510 5 speed gearbox

Suitable For:

  • Alfa 145/146 1.4 Twin Spark 90hp
  • Alfa 145/146/147 1.6 Twin Spark 105/120hp
  • Alfa 145/146 1.8 16v Twin Spark 144hp
  • Alfa 145/146/147 QV 2.0 16v Twin Spark 150/155hp
  • Alfa 145/146/147 1.9 JTD 100/105hp
  • Alfa 155 1.7 Twin Spark 116hp
  • Alfa 155/156 1.8 Twin Spark 129/140hp
  • Alfa 155/156 2.0 (J) Twin Spark 144/150hp
  • Alfa 155 1.9 TD 90hp
  • Alfa GT 1.8 Twin Spark 140hp
  • Alfa GT 2.0 JTS 165hp
  • Alfa GTV 1.8 Twin Spark (Mk2)
  • Alfa GTV 2.0 (J)TS 150/166hp (Mk2)
  • Alfa Spider 1.8 Twin Spark 144hp (Mk5)
  • Alfa Spider 2.0 (J)TS 150/166hp (Mk5)
  • Fiat 500 Abarth
  • Fiat Bravo/Brava 1.8 16v 112hp
  • Fiat Bravo 2.0 20v HGT 147/154hp
  • Fiat Bravo/Brava 1.9TD 75/100hp
  • Fiat Bravo/Brava 1.9JTD 105hp
  • Fiat Coupe 1.8 16v 131hp
  • Fiat Coupe 2.0 20v 147/154hp
  • Fiat Mk1 Punto GT Series 1/2/3
  • Fiat Mk1 Punto 1.7TD 60/70/72hp
  • Fiat Mk2 Punto HGT 1.8 16v 131hp
  • Fiat Mk2 Punto 1.9JTD 80/85hp
  • Fiat Mk2 Punto HGT 1.8 16v
  • Fiat Mk2 Punto 1.3 MJTD 70hp
  • Fiat Mk2 Punto 1.9JTD 85hp
  • Fiat Mk1 Uno (late C510 box)
  • Fiat Mk2 Uno Turbo 100/101hp
  • Fiat Mk2 Uno Racing 112/118hp
  • Lancia Mk1 Delta 1.6 90/130hp
  • Lancia Mk1 Delta 1.9TD 80hp
  • Lancia Mk2 Delta 1.8 8v 90/97/105hp
  • Lancia Mk2 Delta 1.8 16v 115/132hp
  • Lancia Mk2 Delta 2.0 16v 139hp
  • Lancia Mk2 Delta 1.9TD 90hp

Blackline Helical LSD's - How They Work

The Blackline helical LSD's are torque biasing, that is they distribute torque between the wheels, loading more torque towards the wheel with the best traction thus improving performance and driveability. Especially in low-grip situations

The helical gearing manages the distribution of friction within the LSD. When torque is applied to the helical gear system it creates a force that pushes the gear into the differential body, thus creating friction. Increases torque, increases the thrust force directly proportional to the amount of torque. This allows the Blackline LSD to cope with considerable traction imbalance even under heavy power conditions, as would be the case on exiting a powered-up corner. But at low torque conditions, the LSD can differentiate quietly and smoothly, thus making the differential very suitable for normal road driving

The Blackline LSD uses the popular parallel axis helical geared configuration optimised for even load distribution. They are designed with a torque bias of 5:1 this means that if one wheel loses traction then the wheel with the most grip can receive five times as much torque as the wheel that is slipping. However, five times zero is still zero, so all these helical LSD's work best when both wheels are 'planted' and some traction is still available on the slipping wheel. In practice this is rarely a problem as there is always some 'drag' on the slipping wheel, however, some drivers expertly use left foot braking to partially lock the spinning wheel

Helical LSD's work especially well when combined with modern anti-lock braking systems

The Benefits Are:

  • Applies equal rotational speed to both wheels
  • Distributes torque according to available traction
  • Minimum servicing compared to plate-type LSD's
  • Low noise
  • Controlled power on launches and drifting slides
  • Progressive engagement
  • Easier car control
  • Optimum gear tooth design and oil distribution
  • Gears and Body Manufactured from 8620 material
  • Direct replacement for stock differential 
Designed for Motorsport use, no instructions included