Click to zoom in
SKU: 611-1500 | UPC: 672036015596
ARP 1/4in x 20 - 1.5 in UHL 12pt SS Bolt Kit (5/pkg) for 1955-2004 Chevrolet Small Block Engines
ARP 611-1500 provides stainless steel 12-point bolts in 1/4-20 x 1.5 inch under head length with a 5-pack kit for Chevrolet Small Block engine hardware. These bolts fasten valve covers oil pans and components on 262-400 cubic inch engines in Camaro Corvette Chevelle Nova trucks and more. Stainless steel construction resists rust from moisture fuels and heat while 12-point heads deliver secure torque and a clean engine appearance.
Key Features
- Stainless Steel Build: Resists corrosion from moisture fuels and heat for long-term engine reliability in harsh conditions
- 12-Point Head Design: Grips firmly with socket to prevent cam-out stripping and ensure precise installation every time
- 1/4-20 Thread Pitch: Matches OEM and aftermarket Small Block Chevy specifications for exact threading and secure hold
- 1.5 Inch UHL: Delivers correct protrusion and clamp load without bottoming out in blind holes on SBC blocks
- 5-Pack Kit: Provides exact quantity for partial replacements custom builds or maintenance saving time on ordering
Product Notes
- ARP recommends thread cleaner and lube for best results
- Clean mating surfaces before assembly to achieve full thread engagement
- Lightweight design at 0.25 lbs ships economically
Installation Notes
- Professional installation recommended.
- Torque to 12-18 ft-lbs depending on application use calibrated wrench
- Compatible with ARP washers and standard Small Block Chevy hardware
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1967-2002 | Chevrolet | Camaro | Base SS Z28 |
| 1962-1982 | Chevrolet | Corvette | Base Stingray |
| 1964-1972 | Chevrolet | Chevelle | Base SS |
| 1962-1979 | Chevrolet | Nova | Base SS |
| 1960-1987 | Chevrolet | C10 Pickup | Base |
| 1955-1972 | Chevrolet | Bel Air | Base |
| 1959-1976 | Chevrolet | Impala | Base SS |
Why Choose ARP?
- Decades of leadership in performance fasteners trusted in NHRA NASCAR
- Manufactured to exacting tolerances for consistent clamp loads
- Made in USA with rigorous quality control
Frequently Asked Questions
-
Q: Does this fit Chevrolet Small Block Chevy 350 engines?
A: Yes ARP 611-1500 bolts match valve cover and oil pan holes on 262-400 cid SBC engines from 1955-2004 -
Q: What stainless steel grade is used?
A: High-strength 18-8 stainless steel rated 170 KSI tensile strength for demanding conditions -
Q: What is the warranty and install torque?
A: Limited lifetime warranty against failure when installed correctly torque to 12-18 ft-lbs with ARP Ultra-Torque lube
Shipping & Handling
- Method: UPS Ground USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Original ARP box 3 x 3 x 1 inches
- Weight: 0.25 lbs
Read More
ARP
ARP (Automotive Racing Products) is the world’s premier manufacturer of high-strength engine and driveline fasteners—head studs and bolts, main studs, rod bolts, and more—engineered and manufactured in-house from start to finish for race-proven reliability. With vertically integrated processes that include cold heading, machining, heat-treating, thread rolling after heat treat, and rigorous QA, ARP maintains aerospace-level certifications (ISO 9001 and AS9100) and validates every part for repeatable clamp load and fatigue resistance. Signature alloys such as 8740 chromoly, ARP2000, L19, and Custom Age 625+ deliver ultimate tensile strengths up to the super-alloy range, while ARP Ultra-Torque fastener assembly lubricant helps achieve consistent pre-load during installation. From street performance builds to professional motorsport programs, ARP fasteners provide precise fitment, superior metallurgy, and the durability needed to keep engines together at elevated cylinder pressures and...
View ARP Products
ARP Head Studs
Welcome to our premium collection of ARP Head Studs and fasteners, specifically engineered for high-performance engines. This expertly curated selection features a variety of fasteners designed to meet the rigorous demands of automotive enthusiasts and professionals. Whether you need OEM replacement parts or specialized hardware for competitive racing series such as Formula 1, IndyCar, NASCAR, or NHRA, our collection has everything you require. ARP Head Studs are celebrated for their superior strength and reliability. Each product featured in our collection is meticulously crafted to ensure your engine performs optimally, even under extreme conditions. Here are some key attributes of our ARP fasteners: High-Quality Materials: Constructed from top-tier materials for exceptional durability. Precision Engineering: Designed to provide a perfect fit and enhance overall performance. Comprehensive Range: From head studs to specialty fasteners, we offer a wide array of options to meet y...
View ARP Head Studs Products
Hardware
Shop premium hardware and installation components at Black Ops Auto Works, your trusted source for engine hardware, bolts, studs, nuts, washers, brackets, mounting kits, replacement hardware, and installation accessories for performance cars, trucks, SUVs, Jeeps, and race builds. Whether you are finishing an engine build, replacing worn hardware, or installing aftermarket parts, we carry high-quality components designed for fitment, durability, strength, and long-term reliability. From ARP bolts and stud kits to Vibrant crush washers, QA1 mounting hardware, PERRIN radiator brackets, and other performance-focused installation parts, our hardware collection helps support clean installs and dependable results across a wide range of builds. Shop Hardware, Bolts, Brackets & Installation Components At Black Ops Auto Works, we offer a wide selection of performance hardware and supporting installation parts for street, track, off-road, and custom applications. Popular Hardware Categorie...
View Hardware Products