Oil Cooler Core 7S-6395 Fits for Caterpillar 3306 3304 Engine 930 950 966 955K 977K D6C D5 D7F
Oil Cooler Core 7S-6395 Fits for Caterpillar 3306 3304 Engine 930 950 966 955K 977K D6C D5 D7F is backordered and will ship as soon as it is back in stock.
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Powering 10,000+ Commercial Fleets
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One Year Warranty
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Easy 60-day Return
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No Hidden Charges Upon Arrival
Compatibility Information
| Part Number | 7S-6395 |
|---|---|
| Make | Fits Caterpillar |
| Model | D6C, 920, 950, 966C, D5, D7F, 930 |
Description
Description
Oil Cooler Core 7S-6395 – Replacement for Caterpillar 3306 3304 Engine 930 950 966 955K 977K D6C D5 D7F
Aftermarket oil cooler core engineered for reliable oil temperature regulation and consistent lubrication system performance in Caterpillar 3304 and 3306 diesel engine applications. Precision-manufactured components ensure drop-in compatibility with correct fitment.
Technical Specifications
- Part Numbers: 7S-6395, CA7S6395, 7S6395, 0R-3499, 0R3499, CA0R3499
- Condition: New, aftermarket replacement
- Function: Transfers heat from engine oil to the coolant circuit to maintain oil temperature within the optimal operating range, protecting bearings, journals, and all lubricated components from thermal degradation across Caterpillar 3304 and 3306 engine applications
Equipment Compatibility
Note: Compatibility is provided for reference. Please verify against your part number before ordering.
Fits the Following Applications:
- Caterpillar Engine: 3304, 3306
- Caterpillar Loader: 920, 930, 950, 951C, 955K, 955L, 966, 966C, 977K, 977L
- Caterpillar Track Type Tractor: D5, D6C, D7F
Why Choose This Oil Cooler Core
The oil cooler core is a critical thermal management component in your Caterpillar diesel engine — it keeps engine oil temperatures within the safe operating range to maintain oil viscosity, film strength, and lubrication effectiveness under sustained heavy loads. A clogged, cracked, or leaking oil cooler core results in overheated oil, accelerated bearing wear, and the risk of catastrophic engine failure in loader and dozer applications where continuous high-load operation is the norm. This replacement unit delivers:
- Reliable oil temperature regulation – Engineered to meet the heat transfer capacity and flow specifications of Caterpillar 3304 and 3306 engine oil cooling systems
- Exact-fit installation – Direct replacement with correct core dimensions, port configuration, and mounting interface to match Caterpillar engine specifications without modification
- Durable construction – Built to withstand continuous thermal cycling, high oil pressure, and the demanding duty requirements of Caterpillar loader and track-type tractor engine operation in construction and earthmoving environments
- Cost-effective solution – Aftermarket quality at a fraction of dealer pricing
Package Contents
- 1 × Oil Cooler Core 7S-6395
Essential for Caterpillar 3304 and 3306 engine oil cooling system maintenance and cooler core replacement across 930, 950, 966, 955K, 977K loader, D5, D6C, and D7F track-type tractor applications. Keep your Caterpillar engine delivering reliable oil temperatures and full protection on every operation.
1 Year Warranty
1 Year Warranty
Fab Heavy Parts is excited to offer a 12-month warranty on all new replacement/aftermarket parts starting from your original purchase date.
Enjoy peace of mind with Fab Heavy Parts!
For more warranty details, please check out our warranty policy.
Fast Delivery
Fast Delivery
Estimated delivery time 3-6 workdays
No Core Charge
No Core Charge
We don't have a core charge for any products.
Frequently Asked Questions
What is your return policy?
We accept returns within 60 days of delivery for unused parts in original packaging. To initiate a return, please submit your request through our return portal. Return shipping costs for non-defective items are the buyer's responsibility.
Can I cancel my order?
You may request a cancellation before your order has been dispatched. Once an order has been fulfilled and shipped, it cannot be cancelled — standard return terms will apply instead. Please contact us as soon as possible if you need to cancel.
What payment methods do you accept?
We accept all major credit and debit cards including Visa, Mastercard, and American Express. We also support PayPal, Apple Pay, and Google Pay at checkout. For B2B and trade customers, bank transfer and net payment terms may be available upon account approval — please contact us to discuss your requirements.
How long will delivery take?
Estimated delivery timeframes are displayed on most product pages and all tool listings. For parts without a displayed timeframe, standard delivery to US addresses is typically 5–10 business days from dispatch, depending on your location and the origin warehouse. Express shipping options may be available at checkout.
Will I be charged import tax or customs duties?
No. US customers are not charged any import fees or customs duties on their orders. The price you see is what you pay — there are no hidden charges added upon delivery.
How do I find out the shipping cost for my order?
You can get an estimated shipping cost directly on the cart page — just add your parts to the cart and enter your delivery zip code to see available shipping options and rates. For large or heavy orders requiring a freight quote, please contact us directly with your parts list and delivery zip code.
Do you offer trade accounts for US buyers?
Yes. US trade customers can apply for a B2B account to access volume pricing, bulk quotation, team invite and dedicated account support. Contact us directly to get started.
