QR Engine Repair
All returns are subject to a 20% restocking fee, for new unused parts - 30days from purchase.
20 Item(s)
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JE RTR High Comp Piston Set - QR25 (10.8-1)
Regular Price: $821.98
Special Price $782.19
JE High Comp Piston Set - QR25 Fits ALL QR25s / Bore 89.0mm, Stroke 100mm, Rod Length 143mm, Flat Top -0.6cc, Grams 338, Set of 4 Compression Ratio: 10.8:1 JE Pistons are machined by the most advanced CNC machining technologies available. JE forged Pistons are trusted by racers and engine builds for dependability. JE Pistons are compatible with boost and nitrous. Crown requires no deburring or preparation 2618 T6 high tensile forged aluminum JE designs are specifically engineered for extreme applications up to, and including, professional competition. In this environment, the higher compression ratios, highest boost, or heavy nitrous usage necessitate the higher tensile strength 2618 aluminum alloy. Crown design features smooth flowing radii for excellent flame travel. 1.0 x 1.2 x 2.8mm ring widths. .787 x 2.250 straight wall carbon steel wrist pin provided. Pin fitting, wire locks and rings included Compression ratio calculated at .020" deck clearance with .025" thick head gasket Learn More -
Boundary QR25DE Billet Crankshaft Timing Sprocket
Regular Price: $159.98
Special Price $149.00
Boundary QR25DE Billet Crankshaft Timing Sprocket Fits ALL QR engines Crankshaft Timing Sprocket by Boundary Pumps®. Billet Crank Sprockets from Boundary follow the same heritage as oil pump gears, manufactured 100% in house with US sourced materials. These sprockets start with a chromoly steel that is 10 times stronger then the OEM powdered metal, hot quenched with a low temper for the highest strength and resistance to wear. more details on - https://www.carid.com/boundary-pumps/crankshaft-timing-sprocket-mpn-qr25de-sp.html All sprockets heat treated to maximum hardness while maintaining toughness Precision CNC machined and broached for accurate fit Dimensions checked after machining and after heat treating for guaranteed fit 80% more cross section versus OEM at the keyway Weighs 30% more then OEM High finish reduces friction and chain vibration New tooth geometry strengthens teeth and keyway Learn More -
OEM Nissan B15 QR25 Full Engine Rebuild Kit (02-06)
Regular Price: $629.99
Special Price $589.98
Full rebuild kit for your Gen 1 (02-06 Sentra, Altima) QR25 that includes everything you need to rebuild your QR yourself. DOES NOT FIT THE FRONTIER
Headgasket
Intake manifold gasket
Exhaust manifold gasket
Valve cover gasket
Valve stem seals
All necessary O-rings
Front seal and rear main sealMain and Rod Bearings
10 Head Bolts
Oil Pump / Water Pump
Cam and Crank Sprockets
Main Timing Chain
Main Tensioner
All Chain Guide Rails
Learn More -
2JR 5 Point Sport Ground Wire Kit - B15 Sentra
Regular Price: $139.99
Special Price $79.98
2JR's Heavy 2 Gauge 5 Point Ground System - the best is finally here. Direct fitment, attaches to the battery, ground point on the drivers fender, to the head, to the passenger shock tower and finally to the alternator bracket. Full grounding of the engine bay. 2J's Sport Ground System can't be compared to anything on the market. High Grade Wire, Silver Crimped Ends, Perfect Fitment! Any electrical component requires power and ground to function properly. If you have a stereo system, HIDS, Fogs, Interior lights and have a bad ground, you will get poor performance from your system. The same is true for any part of the electrical system of your Sentra. If the electrical system has a bad ground, or a barely adequate ground, you can get lower gas mileage, inefficient spark, slower window motors and dim lights. When you add 2JRs Sport 5pt Grounding Kit, you add more grounding points to your B15 to allow your electrical system to function at full capacity, which can make every electrical component operate more efficiently, often increasing horsepower, delivering better gas mileage, and crisper stereo systems Learn More -
Cam Phaser Sprocket (02-06 QR25)
Regular Price: $339.87
Special Price $289.78
If your QR suffers from chain rattle at start up when cold, the issue more than likely is a bad intake sprocket phaser. This can lead to jumped timing, bent valves, broken chains and/or broken main crank sprockets. 2JR offers new cam phaser sprockets. We have these in stock! Do not wait to replace your sprocket and risk an engine failure. Learn More -
B15 QR25 OEM Nissan Valve Cover with Gasket
Regular Price: $198.68
Special Price $179.98
B15 QR25 OEM Nissan Valve Cover - comes with OEM valve cover gasket. If you have leaking spark plug galleys - this is what you need to fix it. You can also add optional 2JR Titanium Valve Cover Bolts in Raw or Burnt Comes with OEM Gasket Learn More -
2002-2006 Hitachi QR25DE Oil Pump / Front Cover
Regular Price: $179.99
Special Price $152.78
Hitachi Oil Pump and Timing Cover Assembly for the 02-06 QR25DE (does not fit B16 models)
- Original Equipment Supplier
- Easy installation with a factory quality fit
- Modular design
- Long service life
- Flow-optimized system design
2JR offers an option for a complete set of OEM Orings needed for the install (these come with the 2JR Rebuild Kit)
- (2)pcs - 15066-3Z000
- (1)pcs - 15066-3Z001
- (1)pcs - 15066-3Z002
- (1)pcs - 15066-3Z003
- (1)pcs - 15066-3Z005
Learn More
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Sentra 2.5L Denso Oxygen Sensors (Pair/Single)
Sentra 2.5L Denso Oxygen Sensors (Pair/Single) Select Year 02 through 06. Then Upstream / Downstream or Both Superior Design Maximizes Engine Performance and Fuel Efficiency DENSO's light duty oxygen sensor started to appear on vehicles with the development of fuel injection systems. The basic job of the sensor is to monitor the air fuel mixture under idle, moderate acceleration and cruise conditions. Under heavy acceleration the oxygen sensor goes into "open loop," which basically means that the engine management computer system ignores the oxygen sensor. Oxygen sensors have a smaller range of limits in detecting and adjusting the difference from an optimum air/fuel ratio. Learn More -
OEM QR25DE Engine Timing Kit
Regular Price: $209.14
Special Price $198.71
Complete Engine timing kit for the Gen 1 QR25DE motor (2002-2006) - fits all Gen 1 QRs OEM Nissan Parts include 1. Left and Right Guide Rails 2. Chain Tensioner 3. Main Chain 4. Exhaust Sprocket 5. Lower Main Sprocket 6. Orings for Upper Pan, Front Cover and Timing Cover Does not include Intake Cam Sprocket/Phaser (can be purchased separately) or the lower chain for the balance shafts - we suggest adding the BSR Kit Learn More -
JWT QR25DE Balance Shaft Removal Kit (BSR)
Regular Price: $129.99
Special Price $109.99
Must have for any lightly modified and/or turbo QR. The Balancer Shaft Removal kit is a must for high RPM performance. The QR25DE comes equipped with a balancer shaft assembly that spins at twice engine speed to generate an opposing inertial mass. Increases oil capacity by 1.5qts Learn More -
Gen1 QR25DE OEM Headgasket Kit
Regular Price: $146.71
Special Price $118.41
Gen1 QR25DE OEM Headgasket Kit Includes OEM Nissan Headgasket and headbolts for the Gen1 QR25DE (2002-2006). 2JR also includes the copper grease for the threads of the bolts. NOTE: you will need a E20 torx bit to remove and install the OEM Bolts and a Angle Gauge - both can be added in the options below Headbolt TQ Sequence https://f01.justanswer.com/JACUSTOMERj34ssqqy/2013-03-05_013940_em_01.jpg Learn More -
Boundary QR25DE Billet Oil Pump Gear Set
Regular Price: $429.98
Special Price $398.78
Boundary QR25DE Billet Oil Pump Gear Set Boundary oil pump gears are 100% manufactured in our Dallas, Texas production facility. We start by quenching our chromoly billets from extreme heat and then temper it to tough indestructible core. After machining we apply our ColdFlow surface hardening process and complete it to a Mirror Finish. What does all this give you? It gives you a pump with stability over 9000 RPM, proven in excess of 900whp, with higher efficiency, less friction, and backed by one of the industries best warranty’s. Oil Pump Gear Features Mirror Finished and Surface Hardened Surface Ground gears for the ultimate in fitment and performance Indestructible core Inner and outer gear set included Unique race inspired gerotor design Symmetrical tooth profile elemenates the gears weak spot making our gear sets indestructible Each set hand, machine, and hardness inspected with Blueprinting Report Learn More -
QR25 OEM Main Cap Bolt Set
Regular Price: $98.14
Special Price $84.57
QR25 OEM Main Cap Bolt Set Fits ALL QR25 years/models. Comes with 10 Bolts necessary for the install of the mains Learn More -
QR25 OEM Water Pump with Alt Housing
Regular Price: $96.14
Special Price $89.69
QR25 OEM Water Pump with Alt Housing For the Gen1 QR25DE (02-06) Water Pump with the Alternator Housing included. Also comes with the gasket set. Learn More -
QR25 Main / Rod Bearing Set w Thrust
Regular Price: $168.40
Special Price $139.14
QR25 Main and Rod Bearing Set with Thrust Washers Fits ALL QR25 engines. Bearings are Japan Made Daido Metal OEM Spec. Thrust Washers are OEM Nissan. Bearings can be ordered in standard, +25, +50, +75 Daido Metal Engine bearings are the mainstay of Daido Metal’s operations, and have been adopted by all Japanese automobile manufacturers, as well as the majors in other countries. We have the leading market share in Japan for plain bearings for engines. Today’s sophisticated, high-technology engines pose demands for high performance and efficiency. Our bearings are also used for the high-speed engine of race cars, including Formula 1, and provide an ultra-high-tech edge in motor sports applications. Learn More -
Gen1 Signal Wheel for B16 Crank
Regular Price: $106.78
Special Price $96.14
Gen1 Signal Wheel for B16 Crank with Bolts Signal wheel to install a B16 Crankshaft or 2JR Knife-edged Crankshaft in a Gen1 QR25 (2002-2006). Complete OEM kit with Bolts Learn More -
QR25 OEM Exhaust Donut Gasket
Regular Price: $26.47
Special Price $21.87
QR25 OEM Donut Gasket Fits the OEM Midpipe and 2JR Midpipes in both 2.5 and 3.0 for all B15 QR25DEs (2002-2006) Learn More -
QR25 Nismo Motul Oil Change Kit (All years)
Regular Price: $139.78
Special Price $109.76
2JR Nismo Oil Change Kit Includes 5 QTS of Motul Nismo 5w40 / K&N Gold Large Oil Filter and OEM Seal for Drain Plug NISSAN MOTORSPORTS INTERNATIONAL - High performance lubricant specially developed for high output, high torque engines. NISMO COMPETITION OIL is the best protection you can get for your engine. This oil grew up with that engine and its development focused on high performance motor sports use: tested in the 2008 Tokachi 24 Hours, run in the NISSAN GT-R NISMO RC and NISSAN GT-R Club Track Edition, and raced in the 24 Hours Nurburgring. The final result of development testing was the choice of a 5W40 over a 0W40 viscosity grade. 2193E (5W40) is a select, synthetic multi-grade oil which mixes polyolesters, known for their superlative viscosity at low temperatures, into the base oil. Formulated for low friction but maintaining generous filming properties, this NISMO-MOTUL motor oil will minimize engine wear to the bearings where pressure is at its highest. Learn More -
OEM QR25DE High Comp Piston Set (11.5-1) All Years 89.00mm
Regular Price: $399.99
Special Price $299.99
High comp OEM QR piston set with with dry coating skirts and hard anodized piston tops. Bumps compression to 11.5-1. Comes with 4 pistons, rings and pins. 220whp with C1 Cams, 2JR Medusa Header and 2JR Plenum. Tune is not required but recommended. ONLY 93 OCT Will fit OEM or 2JR Forged I or H beam rods with tapered ends. Features include: - High strength aluminum skirts - Hard anodized tops - Machined and balanced to +/- 1 gram - Wrist pins included at no extra cost - Accumulator groove included - Double pin oilers, force fed from oil ring - Pick lock grooves for easy lock removal Learn More -
2JR QR25 High Performance Cast Piston Set with Rings 9.5-1
Regular Price: $349.99
Special Price $249.99
2JR produced turbo pistons with hastings racing ring set. Hard anodized piston domes to resist detonation. Thicker ring lands to prevent cracking. Moly coating on the skirts to lubricate piston walls. 9.5-1 Comp with the best anti-detonation quench pads on the piston tops. Good for up to 350whp. Can also be used on all NA projects since these pistons have the same comp ratio as the poorly designed B15 pistons. INCLUDES HASTINGS PISTON RINGS - Made in the USA Will fit on 2JR Forged I or H beam rods with tapered ends. Rods include ARP Rod bolts at no add't cost. Comes in the following sizes - standard .5 mm overbore (20 over) INCLUDES: 4 pistons Oil Ring and Comp Ring Set Piston Wrist Pins Wrist Pin Clips Learn More
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