The Nissan Frontier I Regular Cab (D22) 2.4, produced from 1998 to 2000, represented Nissan’s entry-level offering in the compact pickup truck segment, primarily targeted towards the North American market. Positioned below the larger Nissan Titan, the D22 Frontier aimed to provide a practical and affordable work truck option. This particular variant, equipped with the 2.4-liter KA24DE engine and a five-speed manual transmission, served as the base model, appealing to buyers prioritizing functionality over outright performance. It was a key component of Nissan’s strategy to gain a foothold in the highly competitive American pickup truck market.
Technical Specifications
| Brand | Nissan |
| Model | Frontier |
| Generation | Frontier I Regular Cab (D22) |
| Type (Engine) | 2.4 (143 Hp) |
| Start of production | 1998 |
| End of production | 2000 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 2-3 |
| Doors | 2 |
| Fuel consumption (urban) | 11.7 l/100 km (20.1 US mpg) |
| Fuel consumption (extra urban) | 9.8 l/100 km (24 US mpg) |
| Fuel consumption (combined) | 10.6 l/100 km (22.2 US mpg) |
| Fuel Type | Petrol (Gasoline) |
| Power | 143 Hp @ 5200 rpm |
| Power per litre | 59.9 Hp/l |
| Torque | 209 Nm @ 4000 rpm (154.15 lb.-ft. @ 4000 rpm) |
| Engine Model/Code | KA24DE |
| Engine displacement | 2389 cm3 (145.79 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 89 mm (3.5 in.) |
| Piston Stroke | 96 mm (3.78 in.) |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Engine oil capacity | 3.5 l (3.7 US qt | 3.08 UK qt) |
| Coolant | 9.2 l (9.72 US qt | 8.09 UK qt) |
| Max. weight | 2127 kg (4689.23 lbs.) |
| Fuel tank capacity | 60 l (15.85 US gal | 13.2 UK gal) |
| Permitted trailer load with brakes (12%) | 1588 kg (3500.94 lbs.) |
| Permitted towbar download | 159 kg (350.53 lbs.) |
| Length | 4681 mm (184.29 in.) |
| Width | 1689 mm (66.5 in.) |
| Height | 1588-1595 mm (62.52 – 62.8 in.) |
| Wheelbase | 2649 mm (104.29 in.) |
| Front track | 1395 mm (54.92 in.) |
| Rear (Back) track | 1389 mm (54.69 in.) |
| Ride height (ground clearance) | 175 mm (6.89 in.) |
| Minimum turning circle (turning diameter) | 10.1 m (33.14 ft.) |
| Drivetrain Architecture | Rear wheel drive |
| Number of gears and type of gearbox | 5 gears, manual transmission |
| Tires size | 195/75 R14; 215/65 R15 |
| Wheel rims size | 5.0J x 14; 6.0J x 15 |
Powertrain & Engine Architecture
The heart of the D22 Frontier 2.4 was the KA24DE, a 2.4-liter inline-four cylinder engine. This engine, a staple in Nissan’s lineup for many years, was known for its relative simplicity and durability. It featured a cast iron block and an aluminum cylinder head, employing multi-port fuel injection for efficient fuel delivery. The KA24DE utilized a single overhead camshaft (SOHC) design with four valves per cylinder, contributing to a reasonable power output for its displacement. The engine’s 143 horsepower at 5200 rpm and 209 Nm (154 lb-ft) of torque at 4000 rpm were adequate for typical light-duty pickup truck tasks. The five-speed manual transmission offered a fairly standard gear ratio spread, prioritizing fuel economy and usability over aggressive acceleration.
Driving Characteristics
The 2.4-liter Frontier, with its manual transmission, offered a reasonably engaging driving experience, though it wasn’t particularly quick. Acceleration was modest, and passing maneuvers required planning. The manual gearbox allowed drivers to maintain control and optimize engine power, but the engine lacked the low-end torque found in larger displacement engines. Compared to the optional 3.3-liter V6 engine available in higher Frontier trims, the 2.4 felt noticeably underpowered, especially when hauling loads or climbing hills. However, the lighter weight of the 2.4-liter engine contributed to slightly better fuel economy and improved handling in everyday driving situations. The gear ratios were tuned for practicality, providing a comfortable cruising speed on highways without excessive engine noise.
Equipment & Trim Levels
The base-model Frontier 2.4 was typically sparsely equipped, reflecting its position as the entry-level trim. Standard features generally included a basic AM/FM radio, vinyl upholstery, and manual windows and locks. Air conditioning was often an optional extra. The interior was functional and durable, designed to withstand the rigors of work truck use. Higher trim levels, such as the SE and King Cab models, offered upgrades like power windows, upgraded audio systems, and more comfortable seating. The regular cab configuration provided seating for two or three passengers, depending on the bench seat option.
Chassis & Braking
The D22 Frontier utilized a body-on-frame construction, typical of pickup trucks of the era. The suspension consisted of independent front suspension with coil springs and a leaf spring rear suspension. This setup provided a reasonable ride quality for a truck, but it wasn’t particularly refined. Braking duties were handled by disc brakes in the front and drum brakes in the rear. The braking system was adequate for the truck’s weight and performance, but it lacked the stopping power of more modern braking systems. Stabilizer bars were often omitted on the base model to keep costs down.
Market Reception & Comparison
The Nissan Frontier 2.4 was generally well-received as an affordable and reliable pickup truck. Critics noted its practicality and durability, but also pointed out its lack of power compared to competitors like the Ford Ranger and Chevrolet S-10. Fuel economy was considered average for the segment. The 2.4-liter engine was praised for its longevity, but some reviewers found it to be underpowered for demanding tasks. Compared to the V6-powered Frontier models, the 2.4 offered a lower purchase price and slightly better fuel efficiency, but at the expense of performance. It appealed to buyers who prioritized affordability and basic functionality over power and luxury.
Legacy
The KA24DE engine, found in the D22 Frontier 2.4, has a reputation for being a robust and reliable powerplant. With proper maintenance, these engines can accumulate high mileage. Today, the D22 Frontier 2.4 is a relatively affordable option in the used truck market. While it may not offer the same level of refinement or performance as newer trucks, it remains a practical and dependable work vehicle. Parts availability is generally good, and the relatively simple engine design makes it easier to repair and maintain. The D22 Frontier helped establish Nissan as a viable competitor in the North American pickup truck market, paving the way for the larger and more successful Titan.
