Click to zoom in
This ARP performance fastener, stud, bolt, tool, or assembly is the 86.0mm Ring Compressor. Confirm the exact engine or vehicle application, thread size, length, material, strength series, included quantity, installation lubricant, tightening sequence, and current ARP torque specification before ordering.
Key Features
- Exact 86.0mm Sizing: Matches Honda K20 and Nissan SR20DET bores for secure ring compression without slippage or distortion.
- Application-Specific Engineering: Developed by ARP for popular performance engines, includes matched components for quick setup.
- Durable Construction: High-strength materials resist cracking and wear through repeated high-heat engine builds.
- Tapered Design: Gradually compresses rings as piston enters bore, reducing risk of ring breakage or misalignment.
- Ships in compact box, weight 0.80 lbs with protective padding.
- Compatible with stock and aftermarket pistons in listed 86mm applications.
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| Verify fitment by exact ARP part number and application. Match the vehicle or engine, component location, thread size, length, material, fastener series, package quantity, and every current ARP application note before ordering. | |||
Specifications
| Brand | ARP |
|---|---|
| Manufacturer Part Number | 901-8600 |
| Product Type | Tools |
| Condition | New |
| Configuration | 86.0mm Ring Compressor |
| Exact 86.0mm Sizing | Matches Honda K20 and Nissan SR20DET bores for secure ring compression without slippage or distortion |
| Durable Construction | High-strength materials resist cracking and wear through repeated high-heat engine builds |
| Tapered Design | Gradually compresses rings as piston enters bore, reducing risk of ring breakage or misalignment |
| Application-Specific Engineering | Developed by ARP for popular performance engines, includes matched components for quick setup |
| Easy Identification | Clear size markings speed up tool selection in busy shops or garages |
| Q | Will this fit Honda K24 engines? A: No, designed for 86.0mm bores like K20 series. K24 uses 87.0mm compressor such as ARP 901-8700 |
| Method | UPS Ground |
| Availability | In stock - ships same or next business day |
| Packaging | 7 x 5 x 3 inches secure box |
| Weight | 0.50 lbs net, 0.80 lbs shipping |
| Key Features Exact 86.0mm Sizing | Matches Honda K20 and Nissan SR20DET bores for secure ring compression without slippage or distortion |
What's Included
One new ARP tool in the exact configuration and quantity identified by this listing. Brackets, wiring, air lines, fittings, switches, fasteners, fitting kits, fluids, covers, and accessories are included only when expressly stated for this exact part.
About ARP
Automotive Racing Products manufactures high-performance studs, bolts, nuts, washers, wheel hardware, assembly tools, and installation lubricants for engine, drivetrain, chassis, and racing applications. Thread dimensions, material, preload method, lubricant, torque, and included quantity remain exact-part specific.
Important Disclosures
- California Proposition 65 warning applies. Review the current manufacturer warning before handling or installation.
Related Parts
- Shop all ARP products
- ARP 4.055in Ring Compressor
- ARP 4.110in Ring Compressor
- ARP 4.2125in Ring Compressor
Frequently Asked Questions
How do I confirm the 86.0mm Ring Compressor fits my application?
Match the exact engine family or vehicle, component location, thread diameter and pitch, under-head length, material, strength series, and every current ARP application note.
Can I reuse the factory torque value with this ARP hardware?
Not automatically. Use ARP's current instructions for the exact part, material, lubricant, tightening sequence, and preload method. Factory torque values may be based on different hardware and friction.
What is included with this ARP kit?
Only the studs, bolts, nuts, washers, lubricant, and tools expressly listed for this exact part number are included. Verify the required quantity before disassembly.
Installation Instructions
- Confirm ARP part number 901-8600, the complete application, and every required supporting component before beginning work.
- Clean and inspect all mating threads and components, then verify thread engagement, length, washers, nuts, lubricant, and required preparation before assembly.
- Follow ARP's current tightening sequence, lubricant instructions, torque or stretch method, and any retorque procedure for this exact part.
- Verify clearance, preload, fastener seating, and normal component operation before returning the vehicle or engine to service.
ARP Head Studs
Build or service your engine with ARP head studs, main studs, bolts and assembly hardware at Black Ops Auto Works. Choose an engine-specific kit for a major assembly or individual hardware for a focused installation. Compare the fastener’s job, material and kit contents so the hardware suits the components and build requirements.Head Studs and Main Stud KitsHead studs secure the cylinder head to the block, while main studs serve the main-cap assembly. These are separate kits with different loads and installation requirements. Applications in the selection include BMC B-Series head studs, Ford Modular and Boss main-stud kits, and specified L19 head-stud kits for Mitsubishi 4G63 and Nissan VQ engines. Match the actual engine and assembly before comparing material options with the builder.Engine Bolts for Focused ProjectsCam, intake-manifold, water-pump, header and flexplate bolts address specific component connections. An LS water-pump bolt package and a HEMI aluminum-intake bolt kit ...
View ARP Head Studs Products
Fabrication
Shop automotive fabrication parts, tubing, fittings, hoses, clamps, and welding supplies at Black Ops Auto Works. Find components for custom exhaust routing, intake plumbing, fuel and oil lines, mounting solutions, and heat protection. Compare materials and hardware from Vibrant Performance, Stainless Bros, Ticon Industries, Radium Engineering, Mishimoto, Kooks, and other brands by exact dimensions and intended application. Stainless Steel, Aluminum, and Titanium Tubing Choose tubing, bends, and fabrication sections for your project’s routing and material requirements. This collection includes steel, aluminum, and titanium tubing categories, with selected T304 and SS321 stainless products. Compare outside diameter, wall thickness, straight length, bend angle, and centerline radius before planning cuts and joints. Explore the Stainless Bros collection for additional stainless tubing, mandrel bends, pie cuts, flanges, and exhaust fabrication components. Exhaust Flanges, Clamps, and Sl...
View Fabrication Products
Tools
Choose automotive tools for the component and job in front of you. Compare Wiseco and ARP ring compressors, ACT clutch-alignment tools, Torque Solution engine-service tools, suspension spanners, AN fitting tools and shop accessories. A precise tool match helps you plan installation and service without treating every tool as universal.Engine Assembly and ServiceRing-compressor sleeves are selected by their specified bore size and piston-installation requirements. Compare metric and inch dimensions carefully; a compressor sleeve is a tool, not a replacement cylinder sleeve.Torque Solution seal and cam tools, GrimmSpeed crank-pulley tools, the Hemi blower pulley socket and other engine-specific references have defined applications. Holding, pulling, aligning and installing tools perform different tasks, so review the required tool set for the procedure.Clutch, Drivetrain and SuspensionACT alignment tools must match the clutch hub and pilot arrangement. Yukon spanners and adjuster tools...
View Tools Products