Mazda has a long history of building its own Diesel

Diesel engine

A diesel engine is an internal combustion engine that uses the heat of compression to initiate ignition to burn the fuel, which is injected into the combustion chamber...

 engines, with the exception of a few units that were built under license.

• 1.7 L PN - 1,720 cc - Used in the Mazda Familia
  Mazda Familia
  Mazda's automotive plans for the early sixties consisted of growing alongside the Japanese economy. To achieve this goal, they began by building an extremely cheap Kei car, the R360 in 1960, planning on introducing gradually larger and pricier cars as the Japanese customers became able to afford them...
  
   and Ford Laser
  Ford Laser
  The 1985 KC Laser/GC Meteor was the model's first major redesign. All body styles were carried over, with the addition of a station wagon from 1986. A new "TX3" variant, which was half-way between "GL" & "Ghia" in specification level, replaced the "Sport" variant from the KB series. Unlike the...
  
  
• 2.2 L R2 - 2,184 cc - Used in the 1984 onwards Mazda Bongo
  Mazda Bongo
  The Mazda Bongo, also known as Mazda E-Series and Mazda Access, was a van manufactured by Japanese automaker Mazda from 1978 to 2001.-First generation :...
  
  
• 3.5 L SL - 3,455 cc -
• 4.0 L TF - 4,021 cc -
• 4.6 L TM - 4,553 cc -
• 3.0 L VS - 2,956 cc -
• 2.5 L WL - 2,499 cc - Turbodiesel
  Turbodiesel
  Turbodiesel refers to any diesel engine with a turbocharger. Turbocharging is the norm rather than the exception in modern car and truck diesel engines...
  
  , used in non-US 1995 Mazda MPV
  Mazda MPV
  The Mazda MPV is a minivan manufactured by Mazda. Introduced in 1989 as a rear-wheel drive model with optional selectable four-wheel drive, it was replaced in 2000 with a front-wheel drive-only version...
  
  .
• 2.7 L XB - 2,701 cc - 81 PS, used in 1973 Mazda Parkway (AEXC), E2700 Van and T2700 Titan.
• 3.7 L XC - 3,663 cc -

These three engines (GA/GB/GC in Perkins' internal parlance) were developed especially for Mazda and were never offered by Perkins themselves.

• 2.2 L S2 - 2,209 cc - License built Perkins 4.135 related to HA and XA, used in 1979 to 1984 Mazda Bongo
  Mazda Bongo
  The Mazda Bongo, also known as Mazda E-Series and Mazda Access, was a van manufactured by Japanese automaker Mazda from 1978 to 2001.-First generation :...
  
  , B2200
  Mazda B-Series
  The Mazda B-Series is a pickup truck, first manufactured in 1961 by Mazda Motor Corporation. From the first B-Series, Mazda has used the engine displacement to determine the name. Thus, the B1500 had a 1.5 L engine and the B2600 had a 2.6 L engine...
  
  , Ford Ranger
  Ford Ranger
  The Ford Ranger is a pickup truck produced by the Ford Motor Company. The "Ranger" name had previously been used for a premium styling package on the F-Series full-sized pickup trucks since 1965. The name was moved to this line of North American compact trucks for the 1983 model year.In North...
  
  
• 2.5 L XA - 2,522 cc - License built Perkins 4.154 related to HA and S2
• 3.0 L HA - 2,977 cc - License built Perkins 4.182 related to S2 and XA

Naturally aspirated SOHC, 2 valves-per-cylinder, displacing 1,998 cc with square internal dimensions of 86 mm (3.4 in) bore and 86 mm (3.4 in) stroke diesel RF engine was one of Mazda

Mazda

is a Japanese automotive manufacturer based in Fuchū, Aki District, Hiroshima Prefecture, Japan.In 2007, Mazda produced almost 1.3 million vehicles for global sales...

's more popular diesel engine

Diesel engine

A diesel engine is an internal combustion engine that uses the heat of compression to initiate ignition to burn the fuel, which is injected into the combustion chamber...

s.