R143 (New York City Subway car)
File:NYCSubway8253 on the L line.jpg
An R143 train leaves Broadway Junction on the L. ----File:R143Int.JPG
Interior of an R143 car. ----
In service 2002-present
Manufacturer Kawasaki Heavy Industries
Built at Yonkers, NY, Lincoln, NE, and Kobe, Japan
Constructed 2001-2003
Number built 212
Number in service 208 (of which 152 are scheduled for service during rush hours)
Formation 4 car sets (2 A cars and 2 B cars)
Fleet numbers 8101-8312
Capacity 240 (A car)246 (B car)
Operator New York City Subway
Depot(s) East New York Yard
Line(s) served L (New York City Subway service)
Car body construction Stainless steel with fiberglass rear bonnets
Car length 60.21 feet (18.35 m)
Width 9.77 feet (2.98 m)
Height 12.13 feet (3.70 m)
Platform height 3.76 ft (1.1 m)
Doors 8 per car
Maximum speed 55 miles (89 km)
Weight A car:83,700 pounds (38,000 kg)B car:81,900 pounds (37,100 kg)
Acceleration 2.5 MPHPS
Deceleration 2.5 MPHPS (full service),3.2 MPHPS (emergency)
Traction system Bombardier Traction Motor model 1508C
Power output 150 hp (111.8550 kW) per axle
Auxiliaries SAFT 250AH battery (B car)
Power supply 625 VDC third rail
Braking system(s) Dynamic braking propulsion system; WABCO RT96 tread brake system
Gauge  standard gauge

The R143 is a standard gauge subway car design used on the B Division of the New York City Subway in the United States. The cars are primarily used on the L service. The New York City Transit Authority owns 212 R143 cars, numbered 8101 to 8312, and built for an average cost of about $1.5 million per car


Kawasaki Rail Car, Inc. was awarded a $190 million contract for 100 new B Division cars in late December 1998, with an option for as many as 112 more. The new design was based on the A Division's R142A, which Kawasaki also built, and incorporated many features from the R110B prototype. Delivery began in late 2001, and a 30-day test with one train of eight cars began on December 4, 2001. According to Kawasaki, the test was "extremely successful".

R143s began running on the BMT Canarsie Line (L) on February 12, 2002, and all 212 cars were delivered to the subway by March 2003. In addition to the L, where the R143s displaced the older R40 and most of the R42 cars , they also displaced the R42s on the M weekend shuttle service on the BMT Myrtle Avenue Line. The R143s on that line were replaced by R160As in February 2008. One Person Train Operation was tested on the L during mid-2005..

The 212 cars delivered were expected to provide enough service for years, but the fast growth of Williamsburg, Brooklyn overloaded the L by mid-2006.

On June 21, 2006, an eight-car R143 train overshot the bumper at the end of the tracks in the Canarsie Yard after the operator suffered a seizure. Lead car #8277 suffered significant damage and has been stripped of damaged parts for repair. It is currently at the Kawasaki plant in Yonkers while the rest of the set (8278-8280) is at 207th Street Yard.