Part Numbers
Part Numbers
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These are part numbers I have gathered from OEM manuals, trusted references or have purchased and used on my own builds. There may be other parts that work, but this list is of the highest quality and recommended parts. These parts are focused on the RB20DET, but some may work for other engines. This is not a complete list just common parts that you may need when rebuilding or modifying an engine. I always like to say;
"The Nissans from this era are just very expensive Legos without instructions."
Here are links to my favorite places to buy parts and find part numbers:
https://www.z1motorsports.com/
https://www.wiringspecialties.com/
***Please inspect all parts / part numbers right when you get them in the mail. I have had major issues with companies sending me parts for other RBs or just the wrong part number all together.***
RB20 Head Part Numbers
RB20 Head Part Numbers
** NEO Heads have variable valve timing and will need slightly different valve train componets.
Head Studs:
ARP 8740 - PN: 202-4301 - "Nissan RB20, RB20DET, RB25, RB25DET"
Tools - 1/2" 12 point socket & 3/16 allen
ARP 2000 - PN: 202-4309 - "Nissan 2.5L RB25, 6-cylinder"
Tools - 5/8" 12 point socket & 3/16 allen
Head Gasket:
OEM Nissan (79mm x 1.2mm) - PN: 11044-58S01
Tomei Japan (80.5mm x 1.2mm) - PN: 11044R8872M
Tomei Japan (80.5mm x 1.5mm) - PN: 11044R8873M
Tomei USA (80.5mm x 1.2mm) - PN: TA4070-NS07A
Tomei USA (80.5mm x 1.5mm) - PN: TA4070-NS07B
Tomei USA (80.5mm x 1.8mm) - PN: TA4070-NS07C
Cometic (80mm x 0.68mm compressed) - PN: C4495-027
Cometic (80mm x 0.76mm compressed) - PN: C4495-030
Cometic (80mm x 1.00mm compressed) - PN: C4495-040
Cometic (80mm x 1.14mm compressed) - PN: C4495-045
Cometic (80mm x 1.30mm compressed) - PN: C4495-051
Cometic (80mm x 1.42mm compressed) - PN: C4495-056
Cometic (80mm x 1.52mm compressed) - PN: C4495-060
Cometic (80mm x 1.67mm compressed) - PN: C4495-066
Cometic (80mm x 1.78mm compressed) - PN: C4495-070
Cometic (80mm x 1.91mm compressed) - PN: C4495-075
Cometic (80mm x 2.00mm compressed) - PN: C4495-080
Note: Head gaskets are made to be 1.00-2.50mm larger than the engine bore. It is highly recommended to always surface the head and the block when installing a new head gasket especially a multi layered steel (MLS).
Valve Stem Seals:
Supertech - PN: VS-N6E / VS-N6I
Camshafts (Intake/Exhaust):
Click here for a guide to selecting Cams
Note: Any cam with a 9.3mm lift or higher will need upgraded valve springs. Any cam with a 9.3mm lift or higher will need clearance with the head. Some cams require solid lifter conversion.
RB20DET Redtop Cams - 248/240 - 7.8mm/7.8mm
RB20DET Silver Top Cams - 240/240 - 7.8mm/7.8mm
RB20DE Silver Top Cams - 232/240 - 7.3mm/7.8mm
262/262 - 9.3mm/9.3mm - PN: HL182-A
272/272 - 9.35mm/9.35mm - PN: HL182-B
280/280 - 9.35mm/9.35mm - PN: HL182-C
272-264/264 - 10mm/10mm - PN: H182-SC
278-272/278 - 10mm/10mm - PN: H182-SD
Poncam Lash Pair- 258/258 - 8.5mm/8.5mm - PN: TA301B-NS07A
Intake - PN: TA301D-NS07A
Exhasut - PN: TA301F-NS06A
Procam Solid Pair - 272/272 - 10.25mm/10.25mm - PN: TA301A-NS07A
Intake - PN: TA301C-NS07A
Exhaust - PN: TA301E-NS06A
Note: Will need solid lifters, shims and springs for Procam Solid.
Poncam Lash Pair - 256/256 - 8.5mm/8.5mm - PN: 143019
Procam Lash (OEM)
256/256 - 8.5mm/8.5mm - PN: 1411256085 / 1412256085 (same as pon)
260/260 - 8.8mm/8.8mm - PN: 1411260088 / 1412260088
270/270 - 8.8mm/8.8mm - PN: 1411270088 / 1412270088
Procam Solid Lifter
260/260 - 9.25mm/9.25mm - PN: 1417260092 / 1418260092
260/260 - 10.25mm/10.25mm - PN: 1417260102 / 1418260102
270/270 - 9.25mm/9.25mm - PN: 1417270092 / 1418270092
270/270 - 10.25mm/10.25mm - PN: 1417270102 / 1418270102
Note: Will need solid lifters, shims and springs for Procam Solid.
Jun Machine Shop
256/256 - 8.5mm/8.5mm - PN: 1004M-N074 / 1004M-N174
256/256 - 9.3mm/9.3mm - PN: 1004M-N075 / 1004M-N175
264/264 - 9.3mm/9.3mm - PN: 1004M-N076 / 1004M-N176
272/272 - 9.3mm/9.3mm - PN: 1004M-N077 / 1004M-N177
Cam Gears:
Kelford RB20/RB26 Cam Gears - PN: KCG25
Tomei USA Cam Gears (I/E) - PN: TA302B-NS05A / TA302C-NS05A
Tomei Japan Cam Gears (I/E) - PN: 152009 / 152010
HKS RB20/RB26 Cam Gears (I/E) - PN: 22004-AN001 / 22004-AN002
Valve Springs:
Supertech Single Valve Spring Kit (Hydraulic Lifter) - PN: SPRK-2081-RB20
Supertech Dual Valve Spring Kit (Solid Lifter) - PN: SPRK-M1005D-RB20
Kelford Racing Valve Springs (OEM Retainers) - PN: KVS20
Tomei USA Valve Springs - PN: TA304A-NS07A
Tomei Japan Valve Springs - PN: 13203R800
Valve Lifters:
Tomei USA Solid Lifters (Will Need Shims) - PN: TA307A-NS06A
Valve Guides:
Tomei Japan Valve Guides - PN: 163047
RB20 Bottom End Part Numbers
RB20 Bottom End Part Numbers
Rod Bolts:
ARP - PN: 202-6003 - "Nissan L24 (Late) L26 L28, VG30E & VG30ET"
Tools - 1/2" hex socket
Notes: If installed onto rods, the rods will need to be torqued with the ARP bolts
installed then resized/honed.
Main Studs:
ARP - PN: 202-5403 - "Nissan RB26 inline 6-cylinder"
Tools - 16mm 12 point socket
Tomei Japan - PN: 193013
Notes: For upgraded main studs it is recommended to line hone crank and double check clearances as the block can distort with more clamping torque on the girdle.
Bearings:
ACL Rod Bearings H - PN: 6B2630H-STD, 0.025, 0.25
ACL Main Bearings H - PN: 7M2394H-STD, 0.025. 0.25, 0.50
ACL Rod Bearings HX - PN: 6B2630HX-STD (Race Cars Only, extra 0.001" / 0.025mm clearance)
ACL Main Bearings HX - PN: 7M2394HX-STD (Race Cars Only, extra 0.001" / 0.025mm clearance)
Pistons:
OEM Nissan STD (78mm Bore) - PN: 12010-59S01 - Discontinued
OEM Nissan +0.5mm (78.5mm Bore) - PN: 12010-59S02 - Discontinued
OEM Nissan +1.0mm (79mm Bore) - PN: 12010-59S03 - Discontinued
Supertech Forged 4032 +0.5mm (78.5mm Bore x 8.5:1) - PN: P6-RB20-78.5-CR8.5-H13-6
Supertech Forged 4032 +1.0mm (79mm Bore x 8.5:1) - PN: P6-RB20-79-CR8.5-H13-6
Raw Brokerage CP Forged Pistons +0.5mm (78.5mm Bore x 8.5:1)
Raw Brokerage CP Forged Pistons +2.0mm (80mm Bore x 8.5:1)
Spool Imports CP Forged Pistons - Available in multiple sizes
Spool Imports Ross Forged Pistons - Available in multiple sizes
Spool Imports 2.4L CP Forged Pistons (For use with RB26 crank) - Available in multiple sizes
Piston Rings:
Click here for all details on piston rings
Hastings STD (78mm) Bore - PN: 6240 / 2C6240 (Chrome)
*Hastings STD (78mm) Bore - PN: 4662 / 2C4662 (Chrome)
NPR (78mm) Bore - PN: SWN30092
Grant (78mm) Bore - PN: P1813 / C1813 (Chrome)
Sealed Power (78mm) Bore - PN: E697X / E697KC (Chrome)
*Most suppliers use the 4662 kit which is for a 4cyl (CA16DE) and just repack them in groups of 6. Identical rings just repacked for RB20 sale.
Note: Rings above are meant for OEM pistons only, will not work with aftermarket pistons. Top Ring is a barrel ring and the second ring is a taper ring in the Hastings kits.
Connecting Rods:
Spool Imports 4340 Forged Rods
Oil Pump:
OEM Nissan N1 RB25DET / RB26DETT (works for RB20) - PN: 15010-24U01
OEM Nissan RB20DET / RB25DET / RB26DETT - PN: 15010-05U12
Tomei Japan High Performance - PN: 193035
Water Pump:
OEM Nissan RB20 - PN: 21010-70TY5
Note: RB20 Pumps are not directly interchangeable with RB25 pumps. It is also recommended to only use RTV like factory and not a gasket.
Other Part Numbers
Other Part Numbers
Timing:
Timing:
Timing Belt:
OEM - PN: 13028-20P25
Nismo - PN: 13028-RSR45
HKS Finetune - PN: 24999-AN001
HKS Finetune Sport - PN: 24999-AN002
Tomei USA - PN: TB101A-NS05A
Tomei Japan - PN: 151051
Gates Racing (Blue) - PN: T1040RB
Greddy - PN: 13524500
Timing Tensioner:
OEM - PN: 13070-5L300
Timing Tensioner Spring:
OEM - PN: 13072-58S10
Timing Idler Pulley:
OEM - PN: 13074-58S00
Crank Pulley Bolt / Sprocket:
OEM Nissan Crank Pulley Bolt- PN: 12309-42L00
OEM Nissan Crank Sprocket - PN: 13021-42L11
OEM Nissan Rear Crank Sprocket Washer - PN: 13022-42L00
OEM Nissan Front Crank Sprocket Washer - PN: 13023-42L00
Sensors / Electronics:
Sensors / Electronics:
Cam Angle Sensor:
Early Square Plug Mitsubishi CAS - PN: 23731-02U11
Oval Plug Hitachi CAS - PN: 23731-08U00
Note: Both RB20 CAS are functionally identical but have different shaped plugs. A new pigtail can be spliced in and either sensor used interchangeably. Later "Plastic CAS" (PN: 23731-5L300) will not work.
Mafs:
RB20, 25, DE, DET Series 1, 89-94 V6 Maxima, M30, (75mm), {Purple tag} - PN: 22680-16V00-A36-000-[N60]
RB20, 25, DE, DET Series 2, (75mm), {Green tag} - PN: 22680-02U00-A36-000-[J60]
Other 75mm Mafs:
95-99 Maxima, (75mm), {Light Pink tag} - PN: 22680-31U00-A36-000-[E60]
J30, 90-96 Z32, (75mm), {Orange tag} - PN: 22680-30P00-A36-000-[N62]
Note: Wiring for the Mafs is different, but they will all bolt on. You will need to have the ability to tune your engine based on what Maf you have (SAFC or aftermarket ECU). N62 is the most popular upgrade as it can handle more flow.
ECU:
ECU:
Here is a spreadsheet with as many part numbers as I can find for RB Engines!
Misc:
Misc:
Thermostat:
OEM Thermostat (All RB, All VG) - PN: 21200-42L0A
Nismo Thermostat - PN: 21200-RS580
Clutch / Flywheel:
Clutch / Flywheel:
Clutch Hydraulics:
OEM Slave Cylinder (All RB20 and RB25DE) - PN: 30620-20U23
OEM Clutch Master Cylinder (C33, A31, R32) - PN: 30610-91P57
Flywheel Bolts:
ARP - PN: 102-2802 - "Nissan KA24 (2.4L) 4-cylinder"
Tools - 3/4" 12 point socket
Pressure Plate Bolts:
ARP - PN: 102-2201 - "Nissan 2.6L RB26 Inline 6"
Tools - 10mm hex socket
Clutch Fork and Springs:
OEM Nissan Clutch Fork - PN: 30531-01S00
OEM Nissan Clutch Fork Retainer Spring - PN: 30534-E9000
OEM Nissan Throwout Bearing Retainer Spring - PN:
Throwout Bearing Carrier (thickness "L"):
OEM Nissan (8mm) - PN: 30501-22102
OEM Nissan (10mm) - PN: 30501-B5000
OEM Nissan (12mm) - PN: 30501-A3800
OEM Nissan (14mm) - PN: 30501-N1601
OEM Nissan (16mm) - PN: 30501-U0200
OEM Nissan (18mm) - PN: 30501-S0200
OEM Nissan (20mm) - PN: 30501-B6000
OEM Nissan (22mm) - PN: 30501-S0160
OEM Nissan (24mm) - PN: 30501-K0404
OEM Nissan (26mm) - PN: 30501-K0510
OEM Nissan (28mm) - PN: 30501-1C104
OEM Nissan (32mm) - PN: 30501-U8584
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