OEM 23151-6N200 alternator clutch pulley for Nissan Altima, Sentra, Frontier, X-Trail 2.5L QR25DE. 20Cr overrunning pulley, 0.5 kg, in stock with samples.
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OEM 23151-6N200 NISSAN ALTERNATOR CLUTCH PULLEY FOR ALTIMA SENTRA FRONTIER AND X-TRAIL 2.5L QR25DE – 20CR OVERRUNNING PULLEY WITH READY STOCK
This alternator clutch pulley, OEM number 23151-6N200, also written 231516N200, is a production line overrunning pulley replacement for the Nissan QR25DE 2.5 litre petrol engine family that powers the Altima 2002-2006, the Sentra SE-R and Spec V 2002-2004, the Frontier 2005-2009 and the X-Trail 2005-2006. The pulley is the link between the engine accessory belt and the alternator, and its internal one way clutch lets the alternator rotor spin freely when the engine suddenly slows down, so the charging system no longer pulls the belt backwards at every throttle change. Machined from 20Cr alloy steel at about 0.5 kg per piece, this part is held in ready stock and shipped worldwide for garages, parts shops and distributors in Kazakhstan, Malaysia, Nigeria, Peru and neighbouring markets that cannot afford repeated alternator or belt failures on these popular Nissan 2.5 litre cars and pickups.
WHY A WORN SOLID PULLEY SHOULD BE REPLACED WITH THE 23151-6N200 OVERRUNNING CLUTCH PULLEY
On the QR25DE engine the alternator pulley is the most common source of a rattle, rumble or whine that changes with engine speed, because a tired freewheel clutch locks up and lets the belt drive the alternator in both directions. When the clutch no longer releases, every deceleration shocks the belt, the tensioner and the alternator front bearing, which is why many Nissan Altima and X-Trail owners hear a chattering noise at idle or a whining alternator that disappears when the belt is removed. The 23151-6N200 alternator clutch pulley, also called an alternator overrunning pulley, alternator decoupler pulley or alternator freewheel clutch pulley, restores the one way action so the rotor overruns instead of being dragged back. Replacing a worn pulley with this overrunning unit removes belt squeal on start up, quietens the accessory drive, protects the alternator bearings and lengthens the service life of both the drive belt and the charging unit.
VERIFIED FITMENT FOR THE NISSAN QR25DE 2.5 LITRE PLATFORM FAMILY
23151-6N200 is the original Nissan reference for this alternator clutch pulley assembly, and it is listed in the OEM parts system for the 2.5 litre QR25DE engine together with the alternator. The confirmed fitment covers the Nissan Altima 2002-2006 with the 2.5L engine, the Nissan Sentra 2002-2004 SE-R and Spec V 2.5L models, the Nissan Frontier 2005-2009 with the 2.5L engine and the Nissan X-Trail 2005-2006 2.5L, vehicles that are widely driven in Southeast Asia, Central Asia, Africa and South America. Aftermarket catalogues commonly cross this reference with 23151-6N20A, 23151-6N20B and 23151-6N200B, and it is covered by leading brands such as FEBEST under number NDS-J31 and ACKOJA under A38-23-0005. Because Nissan fitted this pulley across several 2.5 litre models, the same stock keeping unit serves sedan, hatchback and pickup applications. Before ordering, compare the number stamped on the pulley currently mounted on your alternator and confirm the engine is a 2.5 litre QR25DE unit; if your vehicle lists a different reference, send the stamped number to our sales team and we will check it against our Nissan alternator pulley range.
20CR ALLOY STEEL – THE MATERIAL BEHIND A QUIET AND STABLE NISSAN ALTERNATOR PULLEY
The 23151-6N200 pulley is manufactured from 20Cr alloy steel, a chromium alloyed steel grade selected for this application because it combines a hard, wear resistant surface with enough toughness for a component that spins on the alternator shaft for the life of the car. The belt contact face and the clutch bore are machined to a controlled finish so the multi rib belt tracks smoothly and the freewheel mechanism engages and releases without binding even in a hot engine bay. Each pulley weighs about 0.5 kg, closely matching the mass of the original Nissan assembly so the rotating balance of the alternator rotor remains unchanged. For daily city driving with constant stop and go, the dimensional stability of 20Cr steel prevents premature belt wear, pulley wobble and the recurring noise that cheap pulleys develop after a few thousand kilometres.
TECHNICAL SPECIFICATION SHEET FOR THE 23151-6N200 ALTERNATOR CLUTCH PULLEY
Part type: alternator clutch pulley with overrunning freewheel, also described as an alternator decoupler pulley, alternator overrunning pulley, alternator freewheel clutch pulley or one way clutch pulley. OEM number: 23151-6N200, also stamped 231516N200. Related references: 23151-6N20A, 23151-6N20B, 23151-6N200B, FEBEST NDS-J31, ACKOJA A38-23-0005. Vehicle application: Nissan Altima 2002-2006 2.5L, Nissan Sentra 2002-2004 2.5L SE-R and Spec V, Nissan Frontier 2005-2009 2.5L, Nissan X-Trail 2005-2006 2.5L, all with the QR25DE petrol engine. Material: 20Cr chromium alloy steel. Net weight: approximately 0.5 kg per piece. Function: one way overrun protection for the alternator rotor that reduces belt slip, noise and bearing load during engine deceleration. Condition: brand new, direct OE style fit with no modification required. Availability: in stock for immediate dispatch in small or container quantities.
PAPER BOX AND CUSTOM DESIGNED PACKAGING FOR SAFE EXPORT DELIVERY
Every 23151-6N200 alternator clutch pulley is packed with export freight in mind. The standard packing is a sturdy paper box that shields the machined pulley face and the internal freewheel clutch from impact, moisture and dust during container loading, ocean shipping and the final road leg to the distributor. For brands and parts shops that sell under their own name, we also supply custom design boxes printed to the customer’s own artwork, including logo, OEM number and barcode layout, so the part arrives ready for your shelf or counter display. Orders from a single sample piece to full carton and container quantities can be packed together with other Nissan QR25DE alternator pulley references in one shipment, which lowers your freight cost per piece and makes stock counting easier at arrival.
READY STOCK WITH REGULAR EXPORT SHIPMENTS TO KAZAKHSTAN, MALAYSIA, NIGERIA AND PERU
This Nissan 2.5 litre alternator clutch pulley is kept in permanent stock, and our export team ships it on a regular schedule to aftermarket buyers in Kazakhstan, Malaysia, Nigeria, Peru and other destinations across Central Asia, Southeast Asia, Africa and South America. Importers, distributors, workshop chains and online sellers can order from a single box up to full container quantities with tiered pricing for repeat and volume orders. We prepare complete export documentation for customs clearance and can recommend the most economical sea freight or air freight routing to your destination city. Because the alternator pulley is one of the first parts replaced when a QR25DE charging system gets noisy, we keep buffer stock so urgent distributor orders are dispatched without waiting for a production run.
SAMPLES AVAILABLE – SEND YOUR ORDER DETAILS VIA WHATSAPP
Sample orders are welcome so you can inspect the 20Cr steel machining quality, feel the freewheel clutch action and confirm the fit on your Nissan alternator before placing a bulk order. To request a sample of the alternator clutch pulley 23151-6N200, please send us the sample quantity you need, the sample OEM number 23151-6N200, your shipping address together with the postal code, and a WhatsApp number for contact. Our sales team will confirm the sample price and the freight charge, and your parcel will be dispatched as soon as the order is confirmed.
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