M97.21 3.4L Porsche Cayman S & Boxster S Engine Rebuild Kit (Standard or Deluxe)
$5,550.00
Our extensive engine rebuild kits for 2006-2008 Porsche Cayman S and 2007-2008 Porsche Boxster S models with the 3.4 liter M97.21 and M97.22 engines include hardware, bearings, seals, gaskets, and much more using only the highest quality Genuine Porsche, OEM, and aftermarket components from manufacturers like ARP and LN Engineering.
The optional upgrade to our premium kit also includes many more items that are often reused rather than replaced during rebuilds and are highly recommended. Please check each product description for a complete list of what is included with the standard as well as the premium engine rebuild kits.
When choosing the Deluxe option, we upgrade the kit to include Billet Tensioner Paddle, CP-Carrillo Connecting Rods, and Chromoly Oil Pump Drive recommended for all cars that might see track use.
Components that are normally reused and not included in these kits should be evaluated, qualified, and replaced if necessary. RND Engine Rebuild Kits do not include new pistons, rings, pins, or clips and are designed as a supplement to our block repair process. The Nickies cylinder sleeving service (or Nickies-Lite direct plating) and matching piston set is sold separately. IMS bearing is also not included and is sold separately.
Photos shown are representative of what may be included in an engine kit and will vary by engine designation and options selected.
If you are planning on rebuilding your 3.4 liter Porsche Boxster S or Cayman S engine, we recommend calling LN Engineering to discuss your Porsche engine rebuild and upgrade options including our Nickies sleeving and intermediate shaft reconditioning services.
Description
The RND Engines M97.21 engine rebuild kit includes most everything you need to overhaul and upgrade your Porsche Boxster S or Cayman S 3.4 engine.
Standard M97.21 Engine Kit includes:
| Part name | Qty | Brand |
| Air Oil Separator | 1 | OEM/Genuine |
| Cam sprocket bolts | 8 | OEM/Genuine |
| Camshaft gear bolt | 2 | OEM/Genuine |
| Camshaft shim washer | 2 | OEM/Genuine |
| Carrier bolts | 14 | ARP |
| Case bolt o rings | 4 | OEM/Genuine |
| Case bolts | 25 | OEM/Genuine |
| Chain rail bolt o ring | 6 | OEM/Genuine |
| Crankcase lid gasket | 1 | OEM/Genuine |
| Crush washer | 1 | OEM/Genuine |
| Dipstick tube o ring | 1 | OEM/Genuine |
| Front seal | 1 | OEM/Genuine |
| Gasket | 1 | OEM/Genuine |
| Guide rail | 2 | OEM/Genuine |
| Head bolts | 24 | OEM/Genuine |
| Head gasket | 2 | OEM/Genuine |
| Inner spark plug tube o ring | 6 | OEM/Genuine |
| Large cam plug | 2 | OEM/Genuine |
| Large heat exchanger seal | 2 | OEM/Genuine |
| Exhaust Lifter | 12 | OEM/Genuine |
| Lower case water jacket | 1 | OEM/Genuine |
| Main bearing | 14 | OEM/Genuine |
| Main oil pump gasket (Inlet) | 1 | OEM/Genuine |
| Main oil pump gasket (Outlet) | 1 | OEM/Genuine |
| Main oil pump housing gasket | 1 | OEM/Genuine |
| Oil cooler | 1 | OEM/Genuine |
| Oil drain plug | 1 | LN Engineering |
| Oil drain plug seal | 1 | OEM/Genuine |
| Oil fill tube o ring | 1 | OEM/Genuine |
| Oil filter | 1 | OEM/Genuine |
| Oil level sensor seal | 1 | OEM/Genuine |
| Oil pump housing o ring | 2 | OEM/Genuine |
| Outer spark plug tube o ring | 4 | OEM/Genuine |
| Pick up tube o ring | 1 | OEM/Genuine |
| Rear main seal | 1 | OEM/Genuine |
| Rod bearing | 12 | OEM/Genuine |
| Rod bolts | 12 | ARP |
| Scavenge pump o ring | 2 | OEM/Genuine |
| Small cam plug | 2 | OEM/Genuine |
| Small heat exchanger seal | 2 | OEM/Genuine |
| Solenoid seal | 4 | OEM/Genuine |
| Spark plug | 6 | OEM/Genuine |
| Tensioner paddle wear pin | 1 | OEM/Genuine |
| Tensioner washer | 4 | OEM/Genuine |
| Thermostat | 1 | LN Engineering |
| Thermostat gasket | 1 | OEM/Genuine |
| Thrust bearing | 2 | OEM/Genuine |
| Timing chain | 2 | OEM/Genuine |
| Timing chain guide | 1 | OEM/Genuine |
| Timing chain IMS large sprocket | 1 | OEM/Genuine |
| Timing chain rail | 1 | OEM/Genuine |
| Timing chain rail | 1 | OEM/Genuine |
| Timing chain rail | 1 | OEM/Genuine |
| Timing chain rail | 1 | OEM/Genuine |
| Timing chain rail pad | 1 | OEM/Genuine |
| Upper case water jacket | 1 | OEM/Genuine |
| Upper radiator hose gasket | 1 | OEM/Genuine |
| Valve cover bolts | 54 | OEM/Genuine |
| Water bypass gasket | 1 | OEM/Genuine |
| Water housing gasket | 1 | OEM/Genuine |
| Water outlet gasket | 1 | OEM/Genuine |
| Water pump gasket | 1 | OEM/Genuine |
| Water temp sensor gasket | 1 | OEM/Genuine |
Deluxe M97.21 Engine Kit includes all the above Standard parts, plus:
| Part name | Qty | Brand |
| Air injection cut-off valve gasket | 1 | OEM/Genuine |
| Cam sensor | 2 | OEM/Genuine |
| Cam solenoid | 4 | OEM/Genuine |
| Chain Tensioner – IMS | 1 | OEM/Genuine |
| Chain Tensioner – Lower Left | 1 | OEM/Genuine |
| Chain Tensioner – Upper Right | 1 | OEM/Genuine |
| Crank sensor | 1 | OEM/Genuine |
| Knock sensor | 2 | OEM/Genuine |
| Oil fill tube | 1 | OEM/Genuine |
| Oil level sensor | 1 | OEM/Genuine |
| Oil pressure switch | 1 | OEM/Genuine |
| Oil separator hose | 1 | OEM/Genuine |
| Secondary Air Injection Pipe Bracket Gasket | 1 | OEM/Genuine |
| Secondary Air Injection Pipe Gasket (on Crankcase) | 1 | OEM/Genuine |
| Vent line for oil separator (lower fitting) | 1 | OEM/Genuine |
| Vent line for oil separator (upper fitting) | 1 | OEM/Genuine |
| Water pump | 1 | OEM/Genuine |
| Water temp sensor | 1 | OEM/Genuine |
| Billet IMS chain tensioner paddle | 1 | LN Engineering |
| Chromoly oil pump drive | 1 | LN Engineering |
| Connecting rods | 6 | Customer select |
Important: Before ordering, always confirm that the part fits your specific type/model/engine.
Additional information
| Weight | 45 lbs |
|---|
- Images are stock photos. Actual product may vary. While we strive to ensure that all product images and descriptions on our website are accurate, slight variations in appearance may occur due to updates in design, manufacturing processes, or material finishes. These differences do not affect the functionality or quality of the product. If you have specific concerns or need more details before purchasing, please contact our customer support team for assistance.
- Some items may be special order, out of stock, subject to additional freight charges, or import duties. Customers will be contacted for any of these special situations for customer approval before proceeding with any order.
- The Seller, hereby expressly disclaims all warranties either express or implied, including any implied warranty of merchantability or fitness for a particular purpose, and neither assumes nor authorizes any other person to assume for it any liability in connection with the sale of this part(s) and/or service. Buyer shall not be entitled to recover any consequential damages, damages to property, damages for loss of use, loss of time, loss of profits, or income, or any other incidental damages. In addition, expressly excluded is any liability for defects pertaining to safety or performance, by way of ‘‘strict liability’’, negligence or otherwise. In the event of non-payment, the Buyer agrees that the costs of collection including court cost, and reasonable attorney’s fees, shall be recoverable from the Buyer. The Buyer has read and with any transaction, agrees to all of the terms and conditions in connection with the Seller.
- Terms: • All Returns/Exchanges Require Written or Verbal Pre-Authorization and RMA Number. • Positively No Exchanges Without This Invoice. • No Refunds On Opened Packages Or Used Parts. • Items Returned Must Be In Original Packaging. • No Refunds On Special Orders. • No Return On IMS Parts. • No Refunds After 30 Days. • 25% Handling Charge On All Returned Items. • No Returns On Electrical Parts. • Refund On Purchases Paid By Check Are Refunded After Check Clears. • Limited Lifetime Warranty on NSC plating provided by Millennium Technologies LLC and subject to their terms and conditions. • There is no warranty on blocks processed with the Nickies Lite direct plating process. • Any Damage Must Be Reported to the Shipper and LN within 24 Hours of Receipt.

Some products sold by LN Engineering LLC or on https://www.LNengineering.com contain or may contain chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. LN Engineering has chosen to provide a warning based on its knowledge of the presence of one or more listed chemicals without evaluating the exposure. Products may contain chemicals in amounts acceptable by the safe harbor levels as outlined by Proposition 65, or not at all, however we have chosen to issue this warning on all of our products as an act of caution.
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