Nissan Pick Up Alternator 23100-VK010 | 12V 90A | 2PK

Product Overview

The 23100-VK010 is a Nissan OE part number for a 12-volt 90-amp alternator built for the YD25DDTi 2.5-litre common-rail diesel that powered the D22-series work pickup and the Navarra. The unit is a Mitsubishi design, which is why the Mitsubishi numbers A003TB5099 and A003TB0699 sit alongside the Nissan numbers, and why the aftermarket cross list runs through Bosch, Delco Remy, CASCO, and Magneti Marelli as well as Nissan and Mitsubishi. It was fitted to the D22 Pick Up Hardbody, the Navarra D22, the NP300, and the Pick Up King Cab, all of which shared the same engine and charging system.

The thing that makes this alternator different from most of its siblings in the Nissan range is the pulley. Where the majority of Nissan's 90 to 150-amp alternators use a six- or seven-rib clutch pulley, this unit uses a 2PK two-rib solid pulley. A solid pulley is simpler, cheaper, and perfectly adequate for a work truck that does not spend its life bouncing between idle and full throttle the way a passenger car does. The YD25DDTi in a D22 Pick Up runs at steady rpm under load, the belt load is predictable, and there is no start-stop system or aggressive regenerative braking to create sudden reversals in belt tension. The 2PK solid pulley is the correct spec for that duty, and it is the number to match if that is what came out of the vehicle. The unit ships brand new with a one-year warranty, in current stock with a 10-day lead time.

Net weight is 6.7kg; gross weight is 7.1kg. Dimensions are 240 by 180 by 170mm. Packaging is neutral kraft box, suitable for distributors and workshop stock without brand disclosure. The pulley is a 2PK two-rib solid type with an internal regulator. The rotation is clockwise.

Why the 2PK Solid Pulley Is the Right Choice for a Work Truck

The first thing to understand is why this alternator uses a 2PK solid pulley when most other Nissan alternators in this output range use a 6PK or 7PK clutch pulley. The answer is the vehicle it serves. The D22 Pick Up, the Navarra, and the NP300 are work vehicles. They run at steady highway or worksite rpm, they do not use start-stop technology, and they do not bounce between idle and full throttle in urban traffic. Under those conditions a solid pulley does everything a clutch pulley does, at lower cost and with fewer parts to fail. The clutch pulley is there to absorb sudden reversals in belt tension during frequent engine restarts and aggressive regenerative braking; the D22 platform has neither. Fit a solid pulley to the vehicle that came with one.

The second thing is the vehicle platform itself. The D22 Pick Up Hardbody and the Navarra D22 were Nissan's compact pickup work trucks through the 2000s, popular in Africa, the Middle East, and Southeast Asia as affordable, durable working vehicles. The NP300 took over from the D22 in the late 2000s with the same YD25DDTi engine and the same charging system. All three share the same engine bay and the same alternator, so one Mitsubishi unit covers the whole D22 and NP300 range. For a parts counter that sees Nissan work trucks in for service, one box covers three nameplates, which is the kind of leverage that keeps a shelf lean.

The third thing is the manufacturer. This alternator was built by Mitsubishi Electric, so the old unit may carry A003TB5099 or A003TB0699 rather than a Nissan number. Both are the same part, and the Bosch, Delco Remy, CASCO, and Magneti Marelli numbers in the cross list all describe the same 90A 2PK unit. Use whichever your supplier's catalogue carries, but confirm the 2PK solid pulley and the 90A rating against the old unit before you order.

The pulley is a 2PK two-rib solid type. Match the rib count exactly: a 2PK pulley is narrower than a 6PK or 7PK, and a wider pulley will not seat correctly on a 2PK belt. Never reuse a cracked belt, and do not substitute a clutch pulley unless the original had one, because on this platform a solid pulley is the correct spec.

Diagnosis is the standard voltage test. At 2000 rpm with the lights, the blower, and any accessory load on, battery voltage should hold 13.8 to 14.4V. Below 13.5V under load, the alternator is not keeping up. On a work truck, the usual culprits are the B+ terminal and the earth strap, which corrode in road salt, yard grime, and the dusty conditions common to the regions where the D22 and NP300 are most popular. A poor connection there produces a voltage drop that reads exactly like a weak alternator, so check both before you condemn the unit.

Technical Specifications

Engine Compatibility

The 23100-VK010 alternator fits the Nissan YD25DDTi 2.5-litre common-rail diesel as fitted to the D22-series Pick Up and the Navarra. Confirm fitment by model, year, and engine code.

The YD25DDTi was Nissan's 2.5-litre common-rail diesel for the D22 and NP300 pickup platforms, and the same 90A Mitsubishi alternator with the 2PK solid pulley was used across the range. Confirm the part number, the 2PK solid pulley, and the 90A rating against the old unit before ordering, and note that this unit uses a solid pulley, not a clutch pulley.

What to Look for a Replacement

Start with the pulley. This is the most important check on this specific unit, because the 2PK solid pulley is easy to confuse with the wider 6PK or 7PK clutch pulleys found on other Nissan alternators. The 2PK is a two-rib narrow pulley, and it takes a two-rib belt. A 6PK or 7PK belt will not seat correctly on a 2PK pulley, and a 2PK belt on a 6PK or 7PK pulley will run off. Read the pulley off the old unit and match the rib count exactly before you order.

The second check is the pulley type. This unit uses a solid pulley, not a clutch pulley. On the D22 and NP300 platforms, a solid pulley is the correct spec because the vehicles do not use start-stop technology or aggressive regenerative braking. A clutch pulley will fit mechanically, but it is not what the vehicle came with, and on this platform it is unnecessary. Fit a solid pulley to the vehicle that came with one.

The third check is the manufacturer number. This alternator was built by Mitsubishi Electric, so the old unit may carry A003TB5099 or A003TB0699 rather than a Nissan number. Both are the same part, and the Bosch, Delco Remy, CASCO, and Magneti Marelli numbers in the cross list all describe the same 90A 2PK unit. Use whichever your supplier's catalogue carries, but confirm the 2PK solid pulley and the 90A rating against the old unit before you order.

The fourth check is the B+ terminal and the earth strap. The D22 and NP300 are popular in regions with road salt, yard grime, and dusty conditions, and the connections corrode faster than on a road car. A loose or corroded earth strap or B+ terminal produces a voltage drop that mimics a weak alternator, and on a work truck it is one of the most common causes of a charging complaint. Clean both connections, check the torque, and retest before ordering a new unit.

The fifth check is the battery. The YD25DDTi uses glow plugs for cold starting, and a discharged or faulty battery makes cold starts harder and draws more from the charging system on restart. Test the battery on its own before condemning the alternator. A healthy battery with a correctly functioning charging system will show 13.8 to 14.4V at 2000 rpm under load.

For the install, the standard procedure holds: disconnect the negative battery terminal, unplug the regulator connector, remove the B+ nut, slacken the adjustment and pivot bolts, swing the unit out, and refit in reverse order. On the D22 and NP300 the alternator sits at the front of a work truck engine bay, accessible from above and one side. Set the belt tension by measuring the deflection at the midpoint of the longest run, about 10 to 15mm under thumb pressure, and recheck after a short run. Refit with the correct torque on the mounting and adjustment bolts, and never reuse a cracked belt.

Application Scenarios

• Independent Nissan work-truck specialists working on the D22 Pick Up Hardbody and the Navarra D22, where the 90A 2PK alternator is a regular replacement on the YD25DDTi at high mileage. The 23100-VK010, A003TB5099, and cross-reference numbers are the numbers to source, and the Bosch, Delco Remy, and CASCO numbers help when the catalogue carries a different reference.

• Workshops servicing the NP300, where the same YD25DDTi alternator serves the late-model successor to the D22 platform. One box covers both generations of the pickup, which suits any counter that sees Nissan work trucks in for service.

• Fleet operators running D22 or NP300 pickups and light trucks on the YD25DDTi, where the 90A solid-pulley unit is the correct spec for the standard work-truck configuration. Confirm the 2PK solid pulley before you stock the part, because the wider clutch-pulley units on other Nissan alternators are not a direct swap.

• Parts counters serving the African, Middle Eastern, and Southeast Asian markets, where the D22 Hardbody and the Navarra are volume work vehicles. The Mitsubishi-built unit is well known to trade buyers, and the cross-reference list covers Nissan, Mitsubishi, Bosch, and Delco Remy numbers.

• Workshops diagnosing a battery warning or dimming lights on a D22 or NP300 pickup, where road salt, yard grime, and a corroded earth strap are the most common causes of a charging complaint that is not the alternator at all.

• Owner-operators who have diagnosed a charging fault with a multimeter and need the correct part number, pulley, and rating before fitting the replacement themselves. The D22 engine bay is practical to work in, and the alternator swap is a realistic job on a weekend afternoon.

FAQ

Q: Will this alternator fit my Nissan D22 Pick Up or Navarra?

A: Yes. The 23100-VK010 is the correct 12V 90A 2PK alternator for the D22-series Pick Up Hardbody and the Navarra with the 2.5-litre YD25DDTi common-rail diesel, from 1998 to 2012. The same unit also fits the NP300 with the YD25DDTi from 2008 to 2015. Confirm the existing part number, the 2PK solid pulley, and the 90A rating before ordering.

Q: My vehicle is a Nissan NP300. Is it the same part?

A: Yes. The NP300 is the late-model successor to the D22 platform, and it uses the same YD25DDTi engine and the same charging system. The 23100-VK010 alternator fits both generations of the pickup. One box covers the D22 and the NP300.

Q: The old alternator says A003TB5099, not a Nissan number. Is that the same part?

A: It is the same part. Mitsubishi Electric built this alternator for Nissan, so the original manufacturer number is A003TB5099 and Nissan's resale number is 23100-VK010. The Bosch, Delco Remy, CASCO, and Magneti Marelli numbers in the cross list all describe the same 90A 2PK unit. Use whichever your supplier's catalogue carries.

Q: Why does this alternator have a 2PK solid pulley when other Nissan alternators use 6PK or 7PK?

A: The 2PK solid pulley is the correct spec for the D22 and NP300 platform. These are work vehicles that run at steady rpm without start-stop technology or aggressive regenerative braking, so there is nothing in the duty cycle that requires a clutch pulley to absorb sudden belt tension reversals. A solid pulley does everything a clutch pulley does on this platform, at lower cost and with fewer parts to fail. Fit a 2PK solid pulley to the vehicle that came with one.

Q: Can I use a 6PK or 7PK clutch pulley on this unit?

A: The pulley on this specific unit is a 2PK two-rib solid type, and the rib count must match. A 6PK or 7PK pulley will not seat correctly on a 2PK belt, and a 2PK belt on a wider pulley will run off. Match the rib count and the solid pulley type to the original. If you need a different pulley, source the correct part number rather than swapping pulley types on the same unit.

Q: Can I fit this myself?

A: The replacement is a manageable job. Disconnect the negative battery terminal, unplug the regulator connector, remove the B+ nut, slacken the adjustment and pivot bolts, swing the unit out, and refit in reverse order. Allow one to two hours. On the D22 and NP300 the engine bay is accessible from above. Set the belt tension to about 10 to 15mm deflection at the midpoint of the longest run under thumb pressure, and recheck after a short run.

Q: What is the lead time and warranty?

A: Units are in current stock with a 10-day lead time for dispatch. All units carry a one-year warranty from the date of installation. Warranty claims require documentation of the vehicle and part number. Check specific terms for commercial or fleet use.

In Practice

The independent Nissan work-truck specialist will see the D22 or NP300 with a battery warning that the owner blames on the battery. The diagnostic that earns the job is the 2000 rpm load test combined with a check of the B+ terminal and the earth strap: voltage above 13.8V under load means the alternator is fine and the connections are the fault; below 13.5V means the alternator needs replacement. On a work truck, road salt and yard grime are the usual culprits, and they are cheaper to fix than a new alternator.

For the distributor, one box covers the D22 Pick Up Hardbody, the Navarra D22, and the NP300, which makes this an efficient part to carry for any counter serving Nissan work trucks. The Mitsubishi-built unit is well known to trade buyers, and the neutral kraft packaging suits the distribution environment. The 10-day lead time keeps the shelf topped up for both counter sales and workshop work.

For the technician, the checks that prevent a come-back are the pulley match and the connections. Confirm the 2PK solid pulley before you fit it, because the wider 6PK and 7PK clutch-pulley units on other Nissan alternators are not a direct swap on this platform. Clean and torque the earth strap and the B+ terminal before you close up, and photo the harness route before removal to confirm the replacement is correct the first time.

About the Author

Adrian Popa is an automotive aftersales engineer based in Bucharest, Romania, with a professional focus on Japanese compact trucks and pickups in the Eastern European aftermarket. He holds a degree in mechanical engineering from the University of Bucharest, where his studies covered vehicle electrical systems and the engineering of light commercial and pickup platforms.

After graduation, Adrian worked for a Romanian parts distributor specialising in Japanese commercial vehicles, with the Nissan D22 Pick Up, Navarra, and NP300 among his core responsibilities alongside Toyota Hilux and Isuzu D-Max. Over fourteen years he advised independent workshops and fleet operators across Romania and the wider region on correct parts identification and electrical diagnosis for the YD25DDTi diesel and related Nissan platforms. His workshop experience taught him that the D22 and NP300 are demanding on their charging system in ways that are not always obvious: the vehicles are used in harsh conditions, often on poor road surfaces or off-road, and the most common charging complaint on a D22 is a corroded earth strap or B+ terminal rather than the alternator itself. He also learned that the 2PK solid pulley on this platform is not a downgrade from the clutch pulleys found on other Nissan alternators, but the correct spec for a work truck that does not use start-stop technology.

In his current work Adrian supports Nissan commercial-vehicle specialists and Eastern European distributors on coverage and cross-referencing for the 23100-VK010 charging system, with a focus on the D22 Pick Up, Navarra, and NP300. He maintains a cross-reference set covering Nissan, Mitsubishi, Bosch, Delco Remy, and CASCO numbers for the 90A 2PK alternator, and contributes technical notes to Romanian and Eastern European trade publications on light-truck electrical diagnosis and preventive maintenance. He has a personal interest in the engineering of the D22 and NP300 platforms through the 2000s and 2010s, and in the way Mitsubishi Electric supplied the alternators that Nissan fitted to its most durable work trucks.