The Zpartners 4JB1 TFR55 Manual Transmission Assembly is a complete manual gearbox designed for Isuzu D-MAX TFR55 4×4 models equipped with the 4JB1 diesel engine. The transmission system is matched with Isuzu 4JB1 engine applications and 4×4 drivetrain configurations, including MSG/MUA series manual transmission assemblies. Manufactured according to OEM quality standards, this gearbox features precision-machined gears, synchronizer assemblies, reinforced transmission shafts, and a durable housing structure to provide smooth shifting, stable torque transmission, and reliable performance under heavy-duty driving conditions. Designed as a direct OEM replacement, it is suitable for Isuzu D-MAX repair, maintenance, and global aftermarket applications.
| Product Type | Manual Transmission Assembly / Complete Gearbox |
| Transmission Type | 5-Speed Manual Transmission (5MT) |
| Transmission Application | MSG / MUA 4×4 Manual Transmission System |
| Engine Application | Isuzu 4JB1 Diesel Engine |
| Vehicle Application | Isuzu D-MAX TFR55 4×4 Pickup |
| Drive Type | 4×4 Four-Wheel Drive |
| Gear Configuration | 5 Forward Speeds + 1 Reverse Gear |
| Installation | OEM Direct Replacement |
| Material | High-strength transmission housing with precision-machined alloy steel gears, synchronizer assemblies, reinforced shafts and durable internal components. |
| Feature | Smooth and precise shifting; Stable torque transmission; Heavy-duty gear design; Reliable synchronizer system; Strong load capacity; Durable structure suitable for 4×4 commercial pickup applications. |
| Temperature Range | Designed for normal automotive manual transmission operating conditions. |
| Lifespan | Designed for long service life under proper installation, lubrication and regular maintenance. |
| Advantages | Direct OEM replacement with excellent compatibility; Manufactured according to OEM quality standards; Smooth shifting and stable transmission performance; Heavy-duty construction for 4×4 applications; Strong durability under demanding working conditions; Easy installation without modification required; Factory wholesale supply for global aftermarket customers. |
High-strength carton boxes, wooden cases, pallets, or customized packaging are available according to customer requirements.
Customer logo printing and customized packaging solutions are accepted.

Goods can be shipped by express, air freight, or sea freight according to order quantity and customer requirements.

★ High Compatibility & Accurate Fitment
Compatible with various vehicle models, ensuring precise installation and reliable performance.
★ Strict Quality Control
Each transmission part is inspected before shipment to guarantee consistent quality and durability.
★ OEM Standard Production
Manufactured according to OEM specifications with stable performance and reliable quality.
★ Durable Materials & Long Service Life
Made of high-quality materials with excellent wear resistance and heat resistance.
★ Perfect Replacement Performance
Designed as a direct replacement for original transmission components, easy installation without modification.
★ Professional Manufacturing Experience
Years of experience in automotive transmission parts production with strong supply capability.
★ Customized Service Available
OEM, ODM, packaging and logo customization are available according to customer requirements.
★ Competitive Factory Price
Direct factory supply with competitive prices and flexible order quantities.
Q1: Can you provide samples before placing a bulk order?
A: Yes, we can provide samples for quality checking. Sample cost and shipping fee can be discussed according to the product model.
Q2: How do you guarantee product quality?
A: We have strict quality control procedures. All products are inspected before shipment to ensure they meet customer requirements.
Q3: Are your products compatible with my vehicle model?
A: Please provide your vehicle model, year, engine information or OEM number. Our sales team will help confirm compatibility.
Q4: Can you provide OEM or customized products?
A: Yes, we support OEM, ODM, customized packaging and logo services according to customer requirements.
Q5: What is your delivery time?
A: Normally, delivery time is about 15-30 working days after payment confirmation. For urgent orders, we will try our best to arrange faster production.
Q6: What payment methods do you accept?
A: We accept T/T, Trade Assurance and other payment methods according to customer requirements.
Q7: What is your warranty policy?
A: We provide warranty according to different products, normally 12 months warranty under normal usage conditions.
Q8: What should I do if I receive defective products?
A: Please contact us immediately and provide photos or videos of the problem. We will check the issue and provide a proper solution, including replacement or compensation if necessary.
Q9: What is your minimum order quantity (MOQ)?
A: MOQ depends on different products. Please contact us for detailed information.,