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Gaskets and Seals› Engine Gaskets and Seals
Cometic Gasket
Cometic Harley-Davidson 1340cc EST Complete Motor Set
SKU: C006 C9965
Advanced — 4+ hours
Overview
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Part #: C9965
Today's lightweight engines are producing more horsepower, higher cylinder pressures, clamp loads and extreme temperatures. Our commitment is to provide innovative, quality gaskets while maximizing your engine's power and performance. Cometic's gaskets are proudly made in the USA with materials manufactured on American soil. We are constantly updating and adding models to our ever growing library of gaskets for Powersports, Street Bikes, Snowmobiles, Harley-Davidson and V-Twin applications.
Complete EST Gasket Kit | 3.750in. Bore
Vehicle Symptoms
- Oil leaking from cylinder base gasket
- Loss of compression on Shovelhead engine
- Engine smoking from exhaust due to valve seal failure
- Oil leak from pushrod tube seals
- Excessive engine overheating requiring head gasket replacement
Relevant Conversations
- Harley Shovelhead 80ci complete gasket kit
- Cometic gasket C9965 review
- Shovelhead engine oil leak fix
- Symptoms of bad head gasket Shovelhead Harley
- Best gasket kit for 1980 Shovelhead
- How to replace pushrod tube seals Harley
- Shovelhead base gasket replacement
- Cometic vs OEM gaskets Shovelhead
- Harley Shovelhead rebuild parts list
- Shovelhead compression loss causes
Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
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Specifications
| Brand | Cometic Gasket |
| Part Number | C006 C9965 |
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Returns & Fitment
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.
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