Honda K20C/K24Z Crank Pulley Bolt 90017-RWC-A01

Honda K20C/K24Z Crank Pulley Bolt - 90017-RWC-A01

Doing a timing chain job, front main seal, or accessory belt replacement on your K series? You need a fresh crank pulley bolt. Part number 90017-RWC-A01. This is the OEM bolt that secures your crank pulley to the end of your crankshaft. It's a torque-to-yield fastener, which means it stretches when you torque it down. That stretch creates the clamping force that keeps your crank pulley locked tight. Once it's been torqued, the bolt's done. You don't reuse it. Trying to reuse a stretched bolt means your crank pulley can work loose and you're looking at a grenaded front seal or worse.

Here's Why You Can't Reuse This Bolt

When you torque a crank pulley bolt to spec, the bolt stretches past its elastic limit. That permanent stretch is what creates the clamping force. It's not a flaw, it's intentional engineering. But it means the bolt's a one-time-use part. Once it's stretched, it won't clamp to spec a second time. If you reuse an old bolt, you're gambling with your crank pulley staying put. A loose crank pulley means your serpentine belt slips, your harmonic balancer stops damping vibration, and your timing accessories start acting weird. Worst case scenario: the pulley walks off the crank, destroys your front main seal, and dumps all your oil on the highway. Don't save $15 on a bolt and risk a $1500 tow and repair.

Order It With Your Timing Chain or Seal Job

Any job that requires pulling your crank pulley needs a new bolt. Timing chain service, water pump, front main seal, crank seal, accessory belt work - if you're pulling the pulley, you're replacing the bolt. Order this at the same time as your other parts so it shows up together. You don't want to be halfway through a timing chain job on Saturday and realize you need a $15 bolt that's going to take two days to get here.

Torque Specs Matter

Follow your factory service manual torque procedure exactly. Most K series applications use a two-step torque process: initial torque value followed by an additional angle rotation (typically 90 ft-lbs plus 90 degrees, but verify for your specific engine). Don't guess on torque specs. Look them up for your exact engine before you start. Under-torque and your pulley's loose. Over-torque and you're stretching the bolt beyond spec or stripping threads in your crank.

What You Get

• Honda OEM crank pulley bolt (part number 90017-RWC-A01)
• Torque-to-yield design (one-time use only)
• Secures crank pulley to crankshaft
• Creates proper clamping force when torqued to spec
• Same bolt your engine came with from the factory

Fits Your Car

• 2013-2022 Acura ILX
• 2024-2026 Acura Integra Type S
• 2022-2026 Acura MDX
• 2007-2012 Acura RDX
• 2019-2025 Acura RDX
• 2015-2025 Acura TLX
• 2009-2014 Acura TSX
• 2018-2022 Honda Accord 2.0T
• 2008-2012 Honda Accord
• 2012-2015 Honda Civic Si
• 2016-2026 Honda Civic LX
• 2017-2021 Honda Civic Type R
• 2023-2026 Honda Civic Type R
• 2010-2014 Honda CR-V
• 2012-2015 Honda Crosstour
• 2023-2026 Honda HR-V
• 2026 Honda Prelude

Compatible Engines

• K20C1, K20C2, K20C4, K20C9
• K24Z1, K24Z2, K24Z3, K24Z7