Chrome Moly Studs, 

Washers, & Nuts

Twin Cam / Quad 4 - ARP Chrome Moly - Cam Tower Stud Kit

- Quantity: (20) M8 X 130mm (Hex Keyed) ARP 8740 Chrome Moly Studs, (20) M8 ARP Chrome Moly Flat Washers, (20) M8 - 12-Point ARP Chrome Moly Nuts

- Fits all LD9, LG0, W41, LD2 & L40 Engines.  From 1987-2002

* ARP Ultra Torque Assembly Lubricant

​- Please refer to factory service manual(s) or shop manual(s) for proper assembly instructions and torque specifications.

- Adds clamping force, and helps prevent stripped threads int he cylinder head.

 Please contact us for L40 Single Cam applications or partial kits.  

​- This kit will NOT clear some IDI covers.  This is due to the variances in the tapping depth of the threaded holes into the cylinder head.  Ideal for external, neon, or 2.2L coil swaps.

Please contact us for additional information.  This kit is custom ordered, and the cost varies depending on ARP's prices.

​​- P/N: LD9-ARPCTK
- $375.00 shipped in the greater 48. Please contact us for other locations.

F23, 5-Speed Manual LD9 ARP Flexplate Kit

- Quantity: (6) ARP M10 x 1.0 x 1.000" Long Bolts

- Fits all LN2 & LD9 engines

- ARP assembly instructions.  Click HERE

​- Please see assembly instructions above for torque specifications.

​- P/N: LD9-ARPF23

- $64.25 shipped in the greater 48. Please contact us for other locations.

Please contact us for additional information.

Ecotec 2.2L ARP Head Stud Kit

- Quantity: (1) ARP Head Stud Kit

- Fits all Ecotec 2.2l, RPO: L61 engines from 02-10'

- ARP assembly instructions.  Click HERE

​- Please see assembly instructions above for torque specifications.

​- P/N: L61-ARPHSK

- $190.75 shipped in the greater 48. Please contact us for other locations.

Please contact us for additional information.

Ecotec Exhaust Manifold "ARP" Stud Kit

- Quantity: (10) Stainless M8 ARP studs (Length - 51mm), (10) Stainless M8 ARP washers, & (10) Stainless M8 ARP 12-point nuts

- Fits all Ecotec 2.0l, 2.2l, & 2.4l engines from 02-10' (Please contact us for LNF engines.)  

- These are actual ARP Fasteners, and not a cheap knock-off

​- All are 300 Series Stainless Steel

- Studs have hex heads built into the end for easy removal & installation

​- * ARP Ultra Torque Assembly Lubricant or Loctite P/N C5-A is recommended to prevent gnarling of the thread when inserted into the aluminum head

- Stud torque: 50-55 in.lbs - Nut torque: 85-90 in. lbs.

- * Proper tools are required when installing 12-point nuts or bolts

- P/N: L61-M8EMK

- $131.50 shipped in the greater 48. Please contact us for other locations.

Twin Cam / Quad 4 Exhaust Manifold "ARP" Custom Stud Kit

- Quantity: (10) Stainless M8 ARP studs (Length - 44.5mm), (10) Stainless M8 ARP washers, & (10) Stainless M8 ARP 12-point nuts

- Fits all Twin Cam & Quad 4 engines from 87-02' without an (O86 Head Casting)

- Some Remanufactured heads also have two M10 studs that replace two of the M8 studs.

- Please purchase P/N LG0-M810EMK

- Specifically designed for low output log style quad 4 exhaust manifolds

- These are actual ARP Fasteners, and not a cheap knock-off

​- All are 300 Series Stainless Steel

- Studs have hex heads built into the end for easy removal & installation

​- * ARP Ultra Torque Assembly Lubricant or Loctite P/N C5-A is recommended to prevent gnarling of the thread when inserted into the aluminum head

​- Stud torque: 85-97 in.lbs - Nut torque: 14-19 ft. lbs.

- * Proper tools are required when installing 12-point nuts or bolts

- P/N: LD9-M8EMK

- $107.50 shipped in the greater 48


Wheel Stud Kit ARP, M12 X 1.5mm X 2.500" Length 

- Quantity: (20) M12 ARP wheel studs

- Knurl Diameter - 0.509" (stock diameter 0.501" - Some aftermarket hubs may need to be modified. Some non-OEM hubs come with a smaller bore under 0.501".)

- Under Head Length - 2.500"/63.5mm (stock stud length - 1.634" or 41.5mm)

- Knurl Length - 0.315" (stock knurl - 0.315" or 8mm)

- Nose Length - 0"

- Thread - M12 x 1.5mm

- Fits all C4 & C5, Corvettes from 84-04'.  

- Fits C6 Corvettes from 05-08'

​- Fits all 3rd and 4th Gen Camaros (V6 or V8) from 82-02'

- Fits all J-bodies (I4 or V6) from 83-05'

- With a tensile strength of 190,000 psi, these heat-treated, cadmium-plated 8740 chrome moly wheel studs are a necessity for any car in competitive racing. They easily handle tremendous acceleration shock loads (shear) and lateral forces (elongation).

- These are actual ARP Fasteners, and not a cheap knock-off

- It is easier to remove the wheel hubs to knock out the old studs, and install the new studs. 

- P/N: LS2-M12250

- $78.50 shipped in the greater 48. Please contact us for other locations.

Twin Cam / Quad 4 Intake Manifold "ARP" Custom Stud Kit

- Quantity: (7) Stainless M8 ARP studs (Length - 57mm), (7) Stainless M8 ARP washers, & (7) Stainless M8 ARP 12-point nuts

- Fits all Twin Cam & Quad 4 engines from 87-02'

- Specifically designed for Low output & High output log style quad 4 intake manifolds

- High Output LG0 manifold show in the pictures on the left

- These are actual ARP Fasteners, and not a cheap knock-off

​- All are 300 Series Stainless Steel

- Studs have hex heads built into the end for easy removal & installation

​- * ARP Ultra Torque Assembly Lubricant or Loctite P/N C5-A is recommended to prevent gnarling of the thread when inserted into the aluminum head

​- Stud torque: 85-97 in.lbs. - Nut torque: 12-18 ft. lbs.

- * Proper tools are required when installing 12-point nuts or bolts

- P/N: LGO-M8IMK

- $90.00 shipped in the greater 48. Please contact us for other locations.

Twin Cam / Quad 4 IDI Cover, ARP Stainless Hardware Kit 

- Quantity: (4) ARP Stainless Steel M8 bolts (70mm Long) & (4) Aluminum M8 stinger washers

- Fits all Twin Cam & Quad 4 engines from 87-02'

- P/N: LD9-M8IDI4

- Bolt torque: 10 ft. lbs.

* ARP Ultra Torque Assembly Lubricant or Loctite P/N C5-A is recommended to prevent gnarling of the threads when inserted into the aluminum head.

- $45.00 shipped in the greater 48. Please contact us for other locations.

Refunds:

Any problem(s) with  product(s) designed, created, sold, or manufactured by Ennotech Designs LLC will receive a refund upon return of said product(s). Please contact Ennotech Designs LLC before the return of said product(s).  No item(s) will be accepted without a Return Material Authorization (RMA) from Ennotech Designs LLC.  No refund(s) will be given for damaged or abused product(s). 


*Disclaimer:

Ennotech Designs LLC and any of its manufacturer(s), seller(s), or reseller(s) can not be held responsible for misuse, abuse, and un-approved installation of above products. Please refer to the proper shop manual(s) or service manual(s) for proper torque specifications and procedures for installation and removal of these aftermarket product(s). Please remember to check that all bolts and fittings are properly torqued after installation, and after the first twenty five miles after installation. Ennotech Designs LLC and any of its manufacturer(s), seller(s), or reseller(s) of these above products carry no EPA or CARB approval. Please contact Ennotech Designs LLC with questions and/or concerns regarding the above statements before purchasing.

Chevy, Pontiac, Oldsmobile, & Buick: Products for Sale:

Ecotec Valve cover "ARP" Stud Kit

- Quantity: (10) Stainless M6 ARP 12-Point Bolts (Length - 20mm), (10) Stainless M6 Aluminum Stinger Washers, & (10) Stainless M8 Aluminum Stinger Washers

- Fits all Ecotec 2.0l, 2.2l, & 2.4l engines from 02-10' (Please contact us for LNF engines.)  

- These are actual ARP Fasteners, and not a cheap knock-off

​- All are 300 Series Stainless Steel

​- * ARP Ultra Torque Assembly Lubricant or Loctite P/N C5-A is recommended to prevent gnarling of the thread when inserted into the aluminum head

​- * Proper tools are required when installing 12-point nuts or bolts

- P/N: L61-M6EVC

- $76.25 shipped in the greater 48. Please contact us for other locations.

Ecotec 2.2L ARP Flywheel Kit

- Quantity: (6) ARP M10 x 1.25 x 0.985" Long Bolts

- Fits all Ecotec 2.2l, RPO: L61 engines from 02-10'

- ARP assembly instructions.  Click HERE

​- Please see assembly instructions above for torque specifications.

​- P/N: L61-ARPFWK

- $53.75 shipped in the greater 48. Please contact us for other locations.

Please contact us for additional information.

Twin Cam / Quad 4 - Stainless Steel Timing Cover Hardware Kit

- Quantity: (24) M6 Stainless Steel Button Head Bolts, (2) M6 Stainless Steel ARP Studs, (2) M6 ARP Stainless Steel 12-Point Nuts, & (26) M6 Stainless Steel Flat Washers

- Fits all Twin Cam & Quad 4 engines from 87-02'.

- Specifically designed to clear large diameter & small diameter crank pulleys

- These are actual ARP Fasteners, and not a cheap knock-off

​- All are 300 Series Stainless Steel

- Studs have a rounded nose built into the end for easy removal & installation of the washers and 12-point nuts.

​- * ARP Ultra Torque Assembly Lubricant or Loctite P/N C5-A is recommended to prevent gnarling of the thread when inserted into the aluminum timing housing.

- * Proper tools are required when installing 12-point nuts or bolts

- P/N: LD9-M6TCH

- $47.50 shipped in the greater 48. Please contact us for other locations.


J-Body Front Upper Strut Mount "ARP" Custom Kit

- Quantity: (2) Stainless M8 ARP 12-point bolts (Length - 16mm), (6) Stainless M8 ARP washers, & (4) Stainless M8 ARP 12-point nuts

- Fits all Cavaliers & Sunfires from 95-05.  

- Specifically designed for people running strut tower braces, and will fit OEM style mounts with no strut tower brace.

- Works perfectlywith GMconvertiblestrut tower braces.

- These are actual ARP Fasteners, and not a cheap knock-off

​- All are 300 Series Stainless Steel


- * Proper tools are required when installing 12-point nuts or bolts

- P/N: JBO-M8FUS

- $46.25 shipped in the greater 48. Please contact us for other locations.

- * Please inquire about coil over fasteners.  Many coil over mounts require longer fasteners.

J-Body Master Cylinder Delete - to - Wilwood Tandem manual Master

- Quantity: (1) Aluminum T6-6061 Adapter Plate

- Fits all 95-05 J-bodies

​- This adapter is designed to work with the Wilwood 7/8" Aluminum Tandem Master Cylinder w/ Pushrod - Product Numbers: 260-9439260-9439-BK or - 260-9439-P

​- Please see your shop manual or service manual for proper torque ratings.

- Original J-body.org posting - Click Me!

​- P/N: JBO-260-9439

- $87.50 shipped in the greater 48. Please contact us for other locations.

Please contact us for additional information.

J-Body, ARP Fender Hardware Kit

- Quantity: (12) ARP Stainless Steel M8 bolts (20mm Long), (12) Aluminum M8 stinger washers, (4) M8 Stainless Steel Fender Washers, (4) ARP Stainless Steel M6 bolts (25mm Long), & (4) Aluminum M6 stinger washers.

- The four M6 Bolts are for the Headlights, and the four M8 fender washers are for the hood.

- Fits all Cavaliers and Sunfires from 95-05'

- P/N: LD9-M8M6FK

* ARP Ultra Torque Assembly Lubricant or Loctite P/N C5-A is recommended to prevent gnarling of the threads.

- $94.75 shipped in the greater 48. Please contact us for other locations.

Ecotec 2.2l  Intake Manifold "ARP" Custom Stud Kit

- Quantity: (7) Stainless M6 ARP studs (Length - 38mm), (7) Stainless M8 ARP washers, & (7) Stainless M8 ARP 12-point nuts

- Fits all Ecotec 2.2l engines from 02-08' (RPO code: L61)  

- Not to be used with Eaton M62 Super Chargers.  Please refer to the General Motors instruction manual for additional information. GM P/N 12584331.

- Please inquire about Ecotec 2.2l engines from 09-11' (RPO Codes: LAP & LE8)

- These are actual ARP Fasteners, and not a cheap knock-off

​- All are 300 Series Stainless Steel

- Studs have a rounded nose built into the end for easy removal & installation of the washers and 12-point nuts.

​- * ARP Ultra Torque Assembly Lubricant or Loctite P/N C5-A is recommended to prevent gnarling of the thread when inserted into the aluminum head

- Stud torque: 50-55 in.lbs - Nut torque: 85-90 in. lbs.

- * Proper tools are required when installing 12-point nuts or bolts

- P/N: L61-M6IMK

- $107.50 shipped in the greater 48. Please contact us for other locations.

Phone: (440) 363-1124

MDavis@EnnotechDesi​gnsLLC.com

Stainless Steel Studs, Washers, & Nuts

These WILL NOT CLEAR IDI COVER.

LD9 / Quad4 ARP Pressure Plate Kit

- Quantity: (6) ARP M8 x 20mm Long Bolts & (6) Chamfer Flat-Washers

- Fits all engines LN2 & LD9 engines 

- ARP assembly instructions.  Click HERE

​- Please see assembly instructions above for torque specifications.

​- P/N: LD9-ARPPPK

- $37.25 shipped in the greater 48. Please contact us for other locations.

Please contact us for additional information.

Quad 4 / Twin Cam - Ron Seibenick's Long Tube Headers

- Quantity: (1) Long Tube Header

- Fits all Quad 4 Engines - 87'-94' Model Years

- Fits all Twin Cam Engines - 95-02' Model Years

- Some modification is required for certain model years to the engine sub frames.  95 & 96' Is shown modified in the pictures on the left.  The material was removed, and then the seam was welded closed.

- These are designed for race applications, and off road use.

​- One or Two Oxygen Sensors bungs are available.

- * Headers and flanges are made from mild steel.

- P/N: LD9-LTHSM - 1 5/8" to 1 3/4" Primaries, 3" 4-1 Collector (Twin Cam)

- P/N: LD9-LTHLG - 1 3/4" to 1 7/8" Primaries, 3" 4-1 Collector (Twin Cam)

- P/N: LG0-LTHSM - 1 5/8" to 1 3/4" Primaries, 3" 4-1 Collector (DOHC Engines- Quad 4)

- P/N: LG0-LTHLG - 1 3/4" to 1 7/8" Primaries, 3" 4-1 Collector (DOHC Engines - Quad 4)

- P/N: LD2-LTHSOHC - Under Development, 3" 4-1 Collector (SOHC Engines) 

- P/N: LD9-LTHSM - $550 + Shipping and Handling 

- P/N: LD9-LTHLG $550 + Shipping and Handling

- P/N: LG0-LTHSM $500 + Shipping and Handling

- P/N: LG0-LTHLG $500 + Shipping and Handling

- P/N: LD2-LTHSOHC $525 + Shipping and Handling 

- Ceramic Coating are available at an additional cost.  

- 304 Stainless Steel headers are also available at an additional cost.

Please contact us for additional information.

Twin Cam / Quad 4 Exhaust Manifold "ARP" Custom Stud Kit, (2) M10 Bolts

- Quantity: (8) Stainless M8 ARP studs (Length - 44.5mm), (8) Stainless M8 ARP washers, (8) Stainless M8 ARP 12-point nuts, (2) Stainless M10 ARP bolts (Length - 30mm), & (2) Stainless M10 ARP Washers

- Fits all Twin Cam & Quad 4 engines from 87-02' incluiding (O86 Head Casting)

- Some Remanufactured heads also have two M10 studs that replace two of the lower  M8 studs.

- Specifically designed for High output log style quad 4 exhaust manifolds, & Ron's "Seibenick Racing" headers

- These are actual ARP Fasteners, and not a cheap knock-off

​- All are 300 Series Stainless Steel

- Studs have hex heads built into the end for easy removal & installation

​- * ARP Ultra Torque Assembly Lubricant or Loctite P/N C5-A is recommended to prevent gnarling of the thread when inserted into the aluminum head

- Stud torque: 85-97 in.lbs. - Nut torque: 14-19 ft. lbs. - Bolt torque: 15-20 ft. lbs.

- * Proper tools are required when installing 12-point nuts or bolts

- P/N: LG0-M810EMK

- $107.50 shipped in the greater 48. Please contact us for other locations.


Twin Cam ARP Head Stud Kit

- Quantity: (8) ARP 8740 Chromoly M11 x 7/16-20 x 8.000" Main Studs, (2) ARP 8740 Chromoly M11 x 7/16-20 x 4.165" End Studs, (10) Chromoly 7/16-20 12-Point Nuts, & (10) Chromoly 7/16" Chamfer Undercut Flat Washers

- Fits all Twin Cam engines from 96-02'

​- Please use GM / OEM assembly instructions for torque specifications.

- Torque all 10 nuts in 20ft/lb increments. Please refer to factory service manual for proper torque seqence.

​- P/N: LD9-ARPHSK

- $225.75 shipped in the greater 48. Please contact us for other locations.

​​Please contact us for additional information.

4T40-E, 4-Speed Automatic ARP Flexplate Kit

- Quantity: (6) ARP M10 x 1.0 x 0.800" Long Bolts

- Fits all engines LN2 & LD9 engines 

- ARP assembly instructions.  Click HERE

​- Please see assembly instructions above for torque specifications.

​- P/N: 4T40E-ARPFPK

- $63.50 shipped in the greater 48. Please contact us for other locations.

Please contact us for additional information.

Quad 4 / Twin Cam ARP Main Stud Kit

- Quantity: (1) ARP Main Stud Kit

- Fits all Twin Cam & Quad 4 engines from 87-02'

- ARP assembly instructions.  Click HERE

​- Please see assembly instructions above for torque specifications.

​- P/N: LD9-ARPMSK

- $105.75 shipped in the greater 48. Please contact us for other locations.

​​Please contact us for additional information.

Ecotec M62 Supercharger "ARP" Custom Hardware Kit

- Quantity: (x)

- Supercharger to manifold studs - (4) M8 Bolts (Length - 40mm) - (4) Washers

- Intake manifold brace to block - (2) M8  Bolts (Length - 50mm) - (2) Washers

- Intake manifold to manifold brace - (1) M10 Bolt (Length - 50mm) - (1) Washer

- Idler pulley to block - (1) M10 Bolt (Length - 75mm) - (1) Washer

- Idler pulley to alternator bracket - (1) M8 Bolt (Length - 25mm) - (1) Washer

- Alternator bracket - (3) M8 Bolts (Length - 130mm) - (3) Washers * These bolts are 

not ARP hardware.  These are Stainless Socket Head Cap Screws.

- Tensioner to lower alternator bracket - (1) M8 Bolt (Length - 35mm) - (1) Washer

- Tensioner to upper alternator bracket - (1) M8 Bolt (Length - 40mm) - (1) Washer

- Supercharger bypass vavle - (2) M8 Bolts (Length - 20mm) - (2) Washers

- T-MAP sensor to manifold - (1) M6 Bolt (Length - 25mm) - (1) Washer

- Fits all Ecotec 2.0l, 2.2l, & 2.4l engines from 02-08'  

- Designed to be used with Eaton M62 Superchargers.  Please refer to the General Motors instruction manual for additional information. GM P/N 12584331.

- These are actual ARP Fasteners, and not a cheap knock-off

​- All are 300 Series Stainless Steel, unless noted

​- * ARP Ultra Torque Assembly Lubricant or Loctite P/N C5-A is recommended to prevent gnarling of the thread when inserted into the aluminum threaded holes.

- * Proper tools are required when installing 12-point nuts or bolts

- P/N: L61-M62HK

- $150.00 shipped in the greater 48. Please contact us for other locations.