Isuzu 4ZD1 2.3 Liter Gasoline Engine for Sale | OEM Used Inline-4 SOHC Naturally Aspirated | Direct Fit Isuzu Pickup / Trooper / Rodeo / Amigo (1986 to 1995)
$1,600.00
At a Glance
- Condition: OEM used, all 4 cylinders compression tested
- Availability: In stock, Isuzu 4ZD1 2.3L gasoline engines available
- Shipping: Free shipping to all 50 states via standard freight, 5 to 10 business days
- Donor application confirmed (Pickup, P’up, Trooper, Rodeo, Amigo, Faster, TF Series)
- All 4 cylinders compression tested
- Carburetor condition assessed
- SOHC top-end inspected
- Timing belt condition documented (critical service item)
- Cooling system inspected
- Block visual inspection
- 100% inspection before every order ships
- No core charge required
- Backed by a 15 day replacement warranty against internal defects
Description
About the Isuzu 4ZD1 2.3 Liter Gasoline Engine
The Isuzu 4ZD1 2.3 liter engine is an Isuzu Motors workhorse that powered the Trooper, Pickup (P’up), Amigo, Rodeo, and Faster (TF series) during the late 1980s and early 1990s. It was a long-lasting petrol engine that found applications in many trucks and SUV models, ensuring decent performance on both on-road and off-road terrain. Isuzu designed this Isuzu 4ZD1 2.3 liter engine for sale at Part Nests to provide constant power and durability, which remain the core fundamental design priorities for utility and reliability. This 4-cylinder gasoline engine has left a lasting influence on the company and is greatly appreciated among enthusiasts who respect reliable, simple, mechanically straightforward engines.
Important Note: The 4ZD1 Is a GASOLINE (Petrol) Engine, Not a Diesel
The Isuzu 4ZD1 is sometimes mistakenly described as a diesel engine in older sales listings and online sources. This is incorrect. The 4ZD1 is a gasoline (petrol) engine with the following confirming characteristics:
| Characteristic | 4ZD1 (gasoline) | Typical Diesel Reference |
|---|---|---|
| Compression Ratio | 8.4 to 9.1:1 | 17 to 22:1 (diesels) |
| Fuel System | Carburetor | Direct injection or IDI (diesels) |
| Fuel Type | Gasoline (Petrol) | Diesel fuel |
| Redline | 5,500 to 6,000 RPM | 3,500 to 4,000 RPM (diesels) |
| Ignition | Spark plugs | Compression ignition (diesels) |
For comparison, the Isuzu 4JB1 2.8L (our vaz124 listing) is the diesel equivalent in Isuzu lineup (21.5:1 compression, direct injection, 3,500 to 4,000 RPM redline). If you are searching for an Isuzu 2.3 gasoline engine for your Pickup, Trooper, or Amigo, the 4ZD1 is correct. If you need a diesel, you likely want the 4JB1 (2.8L per vaz124) or 4BD2T (3.9L turbo diesel per our vaz126 listing).
The Isuzu 4ZD1 2.3 Liter Engine
Our Isuzu 4ZD1 2.3 Liter Engine is compatible with various Isuzu models from 1986 to 1995, including the Isuzu Amigo, Pickup, Trooper, and Rodeo. Featuring a Single Overhead Cam (SOHC) with 8 valves (2 valves per cylinder), this Isuzu 4-cylinder gasoline engine is renowned for its durability and consistent performance. The Isuzu 4ZD1 2.3 liter engine is a reliable powerhouse known for its mechanical simplicity. Perfect for replacing an existing engine or a complete swap, it is a prime choice for Isuzu enthusiasts seeking dependable performance.
Features of the Isuzu 4ZD1 2.3 Liter Engine
- Engine Configuration: The 4ZD1 is an Inline-4, overhead camshaft (OHC) engine with a displacement of 2.3 liters (2,254 cc) and a perfectly square 92.0mm x 92.0mm bore and stroke.
- Fuel System: Features a carburetor fuel system, which was common in its era. The carburetor mixes air and fuel before delivery to the engine cylinders. This makes the 4ZD1 mechanically straightforward to service without electronic complexity.
- Valvetrain: The engine has a single overhead camshaft (SOHC) design, providing efficient valve actuation with simple maintenance compared to DOHC layouts.
- Cylinder Head: The cylinder head is designed to accommodate the SOHC and the 8-valve arrangement (2 valves per cylinder, intake and exhaust).
- Output: In its various applications, the 4ZD1 typically produces around 100 to 116 horsepower (depending on specific model year and regional tuning), making it suitable for compact and mid-sized Isuzu trucks, SUVs, and the Amigo.
- Compression Ratio: 8.4:1 to 9.1:1, characteristic of late-1980s gasoline engines designed to run on regular unleaded fuel.
- Redline: 5,500 to 6,000 RPM, typical of a gasoline engine of this era.
- Durability: Known for reliability and durability, the 4ZD1 was well-regarded for longevity and robustness, often lasting well into high mileage if properly maintained.
- Transmission Compatibility: Paired with both manual and automatic transmissions depending on the vehicle application and regional market.
The Isuzu 4ZD1 2.3 Liter Engine Fits
The 4ZD1 was installed in a range of Isuzu vehicles from 1986 through 1995:
- Isuzu Pickup (Isuzu P’up), North American compact pickup truck
- Isuzu Trooper, mid-size SUV (also called Isuzu Bighorn in Japan)
- Isuzu Rodeo, pickup truck
- Isuzu Amigo, compact SUV (3-door variant of the Rodeo platform)
- Isuzu Faster, pickup truck (called Rodeo or Faster in some regional markets)
- Isuzu TF Series Trucks, TF-platform light trucks
Condition and Quality Assurance
Our inventory includes used and remanufactured Isuzu 4ZD1 2.3 liter engines for sale. Each engine undergoes rigorous quality checks and testing procedures to ensure peak performance. Thorough inspections are conducted to uphold high standards of reliability.
Quality Assurance:
- Inspection: Comprehensive quality checks including compression test all 4 cylinders, carburetor condition assessment, SOHC top-end inspection
- Testing: Individual testing post-reassembly
- Timing Belt: Condition documented as a known service item
What Is Included:
- Complete engine assembly with essential components
- Detailed specifications including displacement, power output, donor application
Compliance and Certifications
Our engines meet industry standards and come with relevant certifications to ensure you receive a quality product matched to your specific Isuzu Pickup, P’up, Trooper, Rodeo, Amigo, or Faster application.
Vehicle Compatibility
| Vehicle | Compatibility |
|---|---|
| Isuzu Pickup (P‘up) | 1986 to 1995 |
| Isuzu Trooper / Bighorn | 1986 to 1995 (gasoline 2.3 variant) |
| Isuzu Rodeo | 1986 to 1995 |
| Isuzu Amigo | 1989 to 1995 (compact SUV) |
| Isuzu Faster | 1986 to 1995 (regional market name for Rodeo) |
| Isuzu TF Series Trucks | 1986 to 1995 |
Inspection Workflow
- Donor application confirmed (Pickup, P’up, Trooper, Rodeo, Amigo, Faster)
- All 4 cylinders compression tested
- Carburetor condition assessed (known service item)
- SOHC top-end inspected
- Timing belt condition documented
- Cooling system inspected
- Cylinder head and valve train condition documented
- Block visual inspection
Why Buy From Part Nests
- Donor application confirmed (Pickup, P’up, Trooper, Rodeo, Amigo, Faster)
- All 4 cylinders compression tested
- Carburetor condition assessed
- SOHC top-end inspected
- Timing belt documented
- Free standard freight to all 50 states
- 15 day replacement warranty on internal defects
- Isuzu-experienced support team on the phone
- Call (855) 634-4447 to confirm GASOLINE fuel type (NOT diesel as some legacy listings incorrectly state), 2.3L 4ZD1 displacement (NOT the 2.8L 4JB1 diesel per our vaz124 listing or 3.9L 4BD2T turbo diesel per our vaz126 listing), and donor application before ordering
Additional information
| aspiration | Naturally Aspirated |
|---|---|
| bore-x-stroke | 92.0 mm x 92.0 mm (square) |
| compression-ratio | 8.4:1 to 9.1:1 |
| cooling-system | Liquid-cooled |
| fuel-system | Carburetor |
| fuel-type | Gasoline (Petrol) |
| redline | 000 rpm, 5, 500 to 6 |
| valvetrain | 8 valves (2 valves per cylinder), Single overhead camshaft (SOHC) |
| engine-type | Inline-four, OHC |
| displacement | 2.3 liters (2, 254 cc) |
| power-output | 100 to 116 HP |
| torque | 144 to 152 lb-ft |
| manufacturer | Isuzu Motors |
| production | 1986 to 1995 |
| compatibility | 1986 to 1995 Isuzu 4ZD1 2.3 Liter Engine |
| price | $999.00 |
GASOLINE (petrol), NOT diesel. The Isuzu 4ZD1 is sometimes mistakenly described as a diesel engine in older sales listings and online sources, but this is incorrect. The 4ZD1 has all the characteristics of a gasoline engine: carburetor fuel system (not direct injection or IDI), 8.4-9.1:1 compression ratio (gasoline range, not the 17-22:1 diesel range), spark plug ignition (not compression ignition), 5,500-6,000 RPM redline (gasoline range, not the 3,500-4,000 RPM diesel range), and gasoline fuel (not diesel). If you are searching for an Isuzu 2.3 gasoline engine, the 4ZD1 is correct. If you need a diesel, you want the 4JB1 (2.8L diesel per our vaz124 listing) or 4BD2T (3.9L turbo diesel per our vaz126 listing).
Completely different engines, different fuel types. The 4ZD1 (this listing) is a 2.3L 4-cylinder GASOLINE engine with carburetor fuel system, 8.4-9.1:1 compression, spark plug ignition, and 5,500-6,000 rpm redline. The 4JB1 (our vaz124 listing) is a 2.8L 4-cylinder DIESEL engine with mechanical Bosch-style fuel injection pump, 21.5:1 compression, glow plug starting, and 3,500-4,000 rpm redline. The two engines share NO major components. If you have an Isuzu Pickup, Trooper, or Rodeo and need to determine which engine you have, look at the fuel filler (gasoline vs diesel), presence of glow plugs vs spark plugs, or check the displacement (2.3L = 4ZD1, 2.8L = 4JB1).
1986-1995 Isuzu compact and mid-size vehicles. The 4ZD1 was installed in: Isuzu Pickup (called Isuzu P'up in North America, the compact pickup truck), Isuzu Trooper (called Bighorn in Japan, the mid-size SUV), Isuzu Rodeo (the pickup truck), Isuzu Amigo (compact 3-door SUV variant of the Rodeo platform, 1989-1995), Isuzu Faster (the regional market name for Rodeo in some markets), and Isuzu TF series trucks (TF-platform light trucks). All applications spanned the 1986-1995 production years. Confirm your specific year and trim when ordering; the 4ZD1 was replaced by other Isuzu gasoline engines starting in 1996.
Critical service item, replace at every engine installation. The 4ZD1 uses a timing belt (not a timing chain) to drive the SOHC camshaft. The timing belt is a wear item that should be replaced on a service interval (typically 60,000-90,000 miles for the original Isuzu timing belt). On a used 4ZD1 with unknown service history, the timing belt should be replaced at engine installation regardless of apparent condition. The 4ZD1 is an interference engine, meaning a snapped timing belt at speed can cause valve-to-piston contact, bending valves and potentially damaging the cylinder head. The cost of preventative timing belt replacement at install is modest compared to the consequence of failure.
Toyota W56 or Aisin AR-5 manual, or various automatic options. The 4ZD1 was factory-paired with multiple transmissions depending on year and chassis: manual transmissions including various 5-speed manuals (some Isuzu Pickup applications used the Aisin AR-5 5-speed; some 4WD Trooper applications used Toyota W56 variant transmissions, our vaz122 listing); automatic transmissions including the GM 4L30-E 4-speed automatic in some Isuzu Trooper applications (GM-Isuzu collaboration). Tell us your specific year, trim, and transmission type when ordering and we will confirm correct flexplate or flywheel and bellhousing compatibility.
Possible but uncommon. The 4ZD1 uses a carburetor fuel system, which was standard for its 1986-1995 production era. Some buyers consider converting the 4ZD1 to electronic fuel injection (EFI) for improved cold-start, fuel economy, and emissions performance. The conversion requires a throttle body or multi-port injection system, fuel pump and lines, ECU, sensors, and harness; aftermarket EFI conversion kits exist for popular engines. However, the cost of EFI conversion typically exceeds the value of the engine itself for the 4ZD1. For most 4ZD1 applications, maintaining the original carburetor (with appropriate periodic service) is the practical choice. The 4ZD1 carburetor is mechanically straightforward to rebuild.
Long service life with proper maintenance. The 4ZD1 is known for reliability and durability, often lasting well into high mileage if properly maintained. Documented service lives commonly exceed 150,000-250,000 miles in Isuzu Pickup and Trooper applications before requiring major service. The keys to 4ZD1 longevity: regular oil and filter changes, periodic carburetor service and adjustment, proactive timing belt replacement (the critical service item), proper cooling system maintenance, and avoiding lean operation (which can damage exhaust valves on a carbureted engine). The 4ZD1 is mechanically simple and field-serviceable without specialized electronics, which has supported its longevity in commercial fleet and developing-market applications.
No. There is no core return required.
15 Day Replacement Warranty
Every used Isuzu 4ZD1 2.3L gasoline engine purchased through Part Nests carries a 15 day replacement warranty starting on the delivery date.
What Is Covered
- Internal defects already present when the engine arrives
- Compression failures on any of the 4 cylinders beyond what was disclosed
- Cylinder head crack failures within 15 days from installation (where head was documented as crack-free at shipping)
- Timing belt failures within 15 days from installation if the belt was documented as in-spec at shipping (note: timing belt replacement at installation is recommended regardless of apparent condition)
- Connecting rod, lifter, or bearing failures within 15 days from installation
- Incorrect fuel type shipped (4ZD1 gasoline vs 4JB1 diesel) due to an error on our end
What Is Not Covered
- Damage caused during installation
- Damage from operating with neglected cooling system
- Damage from extended oil change intervals or incorrect oil viscosity
- Damage from running with leaded gasoline or alcohol fuel beyond E10 (the 4ZD1 was designed for regular unleaded fuel)
- Damage from a snapped timing belt that was not preventatively replaced at installation (timing belt replacement at installation is strongly recommended regardless of apparent condition; a snapped timing belt on the 4ZD1 can cause valve-to-piston contact)
- Damage from a flooded or worn carburetor that was not serviced
- External components (carburetor if separately documented, distributor, alternator, starter, A/C, P/S, water pump, fuel pump, fuel tank, transmission) unless itemized
- Labor expenses of any kind
To start a warranty claim, reach us within 15 days of delivery at (855) 634-4447.
- GASOLINE Engine Confirmed: 4ZD1 is petrol (NOT diesel as some legacy listings incorrectly state)
- All 4 Cylinders Tested: Compression results documented before payment
- SOHC Top-End Inspected: Single Overhead Cam 8-valve architecture verified
- Carburetor Condition Assessed: Carburetor fuel system specifically documented
- Timing Belt Documented: Critical service item condition disclosed
- 15 Day Replacement Cover: Internal defects protected from delivery onward
2 reviews for Isuzu 4ZD1 2.3 Liter Gasoline Engine for Sale | OEM Used Inline-4 SOHC Naturally Aspirated | Direct Fit Isuzu Pickup / Trooper / Rodeo / Amigo (1986 to 1995)
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Beauregard T. –
Got a 4ZD1 for a 1990 Isuzu Trooper replacement. Fuel type correctly confirmed as GASOLINE (NOT diesel as some legacy listings incorrectly state), all 4 cylinders compression tested, carburetor condition assessed, SOHC top-end inspection clean. Honest pre-purchase information about the 4ZD1 vs 4JB1 (vaz124 diesel) critical distinction and the recommended timing belt replacement at install.
Marguerite F. –
Sourced a 4ZD1 for a 1992 Isuzu Pickup replacement. Donor application correctly identified as a similar Isuzu Pickup, fuel type confirmed as gasoline, compression test results documented before payment. Honest pre-purchase information about the carburetor service requirement and the GM-Isuzu collaboration that produced the Holden Rodeo / Frontera platform in Australia.