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Caterpillar® | D343/D346/D348/D349
Replacement Overhaul Gasket Set for Caterpillar D343/D346/D348/D349 Applications
Complete
High quality gaskets are crucial for ensuring a reliable seal between engine components and should be replaced regularly to prevent leaks and maintain optimal performance. These high-quality sets ship complete with all the necessary gaskets for your rebuild or repair and are backed by our comprehensive warranty.
Backed by world-class engineering, These replacement parts are produced for applications in the D343/D346/D348/D349 family of engines. Industry uses include construction, mining, and marine. These engines are known for reliability and high-output across various equipment in challengine environments.
Product Image Notice: For representation purposes only. Component colors or exact packaging layouts may vary while maintaining identical OEM fitment.
|
Part Number |
M-1P916 | Overhaul Gasket Set for Caterpillar D343/D346/D348/D349 Applications |
|---|---|
|
Vendor |
Interstate-McBee |
|
Condition |
New |
|
OEM Brand Fitment |
Caterpillar® |
|
Engine Model |
D343/D346/D348/D349 |
|
Cross Reference / Interchange Numbers |
1P916 |
|
Length (in) |
42.0 |
|---|---|
|
Width (in) |
13.0 |
|
Height (in) |
2.25 |
|
Weight (lb) |
8.4 |
|
Notes |
Dimensions shown are for shipping and packaging purposes only. Actual product dimensions may vary. |
|
Processing Time |
1–3 Business Days |
|---|---|
|
Shipping Transit Time |
1–5 Business Days |
|
Total Estimated Delivery |
2–8 Business Days |
|
Shipping Policy |
Click Here |
|
Warranty |
2 Year |
|---|---|
|
Warranty Policy |
Click Here |
| Part # | Description | Qty |
|---|---|---|
| M-2A1162 | Fuel Filter Gasket | 1 |
| M-7B2174 | Oil Seal | 1 |
| M-5M4060 | Lock | 1 |
| M-5M9416 | Gasket | 1 |
| M-5M9419 | Gasket | 1 |
| M-5M9420 | Gasket | 2 |
| M-5M9421 | Gasket | 1 |
| M-5M9735 | Arm Assembly Seal | 1 |
| M-5M9737 | Oil Seal | 1 |
| M-7M38 | Gasket | 1 |
| M-7M910 | Gasket | 2 |
| M-7M969 | Lock Washer | 1 |
| M-2D6392 | O-Ring Seal | 1 |
| M-7M4196 | Gasket | 1 |
| M-7M6918 | Gasket | 1 |
| M-7M7224 | Gasket | 1 |
| M-7M7226 | Gasket | 1 |
| M-7M7272 | Exhaust Manifold Gasket | 1 |
| M-7M7273 | Turbocharger Gasket | 1 |
| M-7M7667 | Gasket | 1 |
| M-7M8144 | Gasket | 2 |
| M-7M8151 | Gasket | 1 |
| M-7M8227 | Gasket | 2 |
| M-3D2992 | O-Ring Seal | 6 |
| M-8M904 | Oil Lines Group Gasket | 1 |
| M-8M1875 | Oil Seal | 2 |
| M-8M4389 | O-Ring Seal | 1 |
| M-8M4986 | O-Ring Seal | 1 |
| M-8M4991 | O-Ring Seal | 4 |
| M-8M5249 | O-Ring Seal | 2 |
| M-8M5254 | O-Ring Seal | 1 |
| M-8M5266 | O-Ring Seal | 1 |
| M-8M5521 | Shutoff Gasket | 1 |
| M-8M5661 | O-Ring Seal | 1 |
| M-3D5073 | Seal | 2 |
| M-8M8997 | O-Ring Seal | 1 |
| M-9M909 | Lock - Nut | 1 |
| M-9M2406 | Gasket | 1 |
| M-9M2414 | Gasket | 1 |
| M-9M2678 | Gasket | 1 |
| M-9M3210 | Side Cover Gasket | 1 |
| M-9M5376 | Gasket | 1 |
| M-9M6292 | Lock | 1 |
| M-9M6293 | Lock | 1 |
| M-9M6542 | Oil Lines Group Gasket | 1 |
| M-2F4159 | Lock | 1 |
| M-9M8513 | Air Cleaner Cup Gasket | 2 |
| M-9M9640 | Gasket | 2 |
| M-9M9647 | O-Ring Seal | 4 |
| M-4N7526 | Seal | 1 |
| M-9N3281 | Gasket | 1 |
| M-1P2278 | Ring | 1 |
| M-1P6857 | Gasket | 1 |
| M-2P8763 | Gasket | 1 |
| M-1S777 | Lock | 1 |
| M-1S2616 | Gasket | 2 |
| M-2F6678 | Oil Seal | 1 |
| M-1S6595 | Turbocharger Oil Supply Gasket | 1 |
| M-1S6827 | Seal | 1 |
| M-1S7390 | Hydraulic Seal | 2 |
| M-1S7876 | Lock Nut | 2 |
| M-1S9546 | Gasket | 1 |
| M-2S1218 | Gasket | 1 |
| M-2S1509 | Front Crankshaft Seal | 1 |
| M-2S3966 | Ring | 1 |
| M-2S4080 | Gasket | 2 |
| M-2S4750 | Access Cover Gasket | 1 |
| M-4F3956 | Gasket | 2 |
| M-2S6151 | Gasket | 1 |
| M-2S7472 | Gasket | 1 |
| M-3S3535 | Seal | 1 |
| M-3S3978 | Marine Gear Seal | 18 |
| M-3S5496 | O-Ring Seal | 1 |
| M-3S9643 | Thermostat Seal | 4 |
| M-3S9686 | Cylinder Head Gasket | 1 |
| M-7C9710 | Gasket | 1 |
| M-4S8513 | Gasket | 1 |
| M-7S2374 | Gasket | 1 |
| M-4F7391 | Hydraulic Seal | 1 |
| M-7S3247 | Gasket | 1 |
| M-7S3256 | Gasket | 1 |
| M-8S5011 | O-Ring Seal | 1 |
| M-8S5067 | Gasket | 1 |
| M-8S5093 | Gasket | 1 |
| M-8S5575 | Seal | 1 |
| M-8S6157 | Gasket | 1 |
| M-8S7093 | Gasket | 1 |
| M-8S9988 | Head Gasket Shim | 1 |
| M-9S712 | Lock | 1 |
| M-4F9653 | Cover Group Seal | 6 |
| M-9S723 | Lock | 1 |
| M-9S746 | Gasket | 1 |
| M-9S1189 | Seal | 1 |
| M-9S1269 | Gasket | 1 |
| M-9S1274 | Air Cleaner Gasket | 2 |
| M-9S2256 | Gasket | 1 |
| M-9S2262 | Gasket | 1 |
| M-9S2391 | Seal | 2 |
| M-9S2394 | Seal - Oil | 1 |
| M-9S4128 | Gasket | 1 |
| M-6F4868 | Oil Pan Washer | 1 |
| M-9S4490 | Gasket | 1 |
| M-9S5747 | Seal | 24 |
| M-0T225 | Gasket | 1 |
| M-2A4448 | Gasket | 1 |
| M-6F6673 | O-Ring Seal | 1 |
| M-6F9163 | Oil Filter Washer | 4 |
| M-7F2122 | O-Ring Seal | 1 |
| M-8F4099 | Gasket | 1 |
| M-8F6647 | Gasket | 1 |
| M-8F8682 | Screw Lock | 2 |
| M-8F8683 | Screw Lock | 1 |
| M-8F9206 | O-Ring Seal | 1 |
| M-9F4522 | Gasket | 1 |
| M-9F5940 | Gasket | 3 |
| M-2A5328 | Lock | 4 |
| M-9F7177 | Gasket | 1 |
| M-1H1023 | O-Ring Seal | 1 |
| M-1H8171 | Hydraulic Seal | 1 |
| M-1H9027 | Gasket | 2 |
| M-2H3504 | Lock | 1 |
| M-2H3931 | O-Ring Seal | 1 |
| M-2H5001 | Seal Ring | 1 |
| M-3H1461 | Power Train Seal | 1 |
| M-3H3385 | Hydraulic Seal | 2 |
| M-3H4970 | Accessory Drive Seal | 2 |
| M-2B1738 | Screw Lock | 5 |
| M-3H5175 | Air Comp Gasket | 1 |
| M-3H7311 | Gasket | 1 |
| M-4H2662 | Sleeve | 2 |
| M-4H5952 | Gasket | 1 |
| M-4H9541 | Gasket | 1 |
| M-5H1039 | O-Ring Seal | 2 |
| M-5H2767 | O-Ring Seal | 2 |
| M-5H3703 | Washer | 2 |
| M-2A5328 | Lock | 4 |
| M-5H7370 | O-Ring Seal | 1 |
| M-2B5721 | Gasket | 1 |
| M-5H7376 | Breather Oil Filler Gasket | 1 |
| M-5H8848 | O-Ring Seal | 1 |
| M-6H1995 | O-Ring Seal | 4 |
| M-6H4005 | Grommet | 4 |
| M-7H9899 | Tachometer Gasket | 1 |
| M-8H2778 | Fuel Filter Gasket | 1 |
| M-8H9180 | Lip Type Seal | 1 |
| M-2J157 | O-Ring Seal | 2 |
| M-2J8163 | O-Ring Seal | 2 |
| M-4J519 | O-Ring Seal | 1 |
| M-4B6029 | Grommet - Rubber | 6 |
| M-4J5268 | Hydraulic Seal | 2 |
| M-6J2419 | O-Ring Seal | 2 |
| M-0L364 | Lock | 49 |
| M-4L8337 | Air Compressor O-Ring Seal | 2 |
| M-5L8991 | Cover Gasket | 1 |
| M-6L1883 | Governor Gasket | 1 |
| M-6L5766 | Gasket | 1 |
| M-6L5773 | Fuel Pump Gasket | 1 |
| M-1M556 | O-Ring Seal | 1 |
| M-1M5829 | Air Lines Group Gasket | 1 |
| M-4B8407 | Flat Washer | 1 |
| M-1M6724 | Oil Pan Gasket | 1 |
| M-1M6831 | Lock Nut | 2 |
| M-1M9711 | Gasket | 1 |
| M-1M9745 | Gasket | 1 |
| M-1M9748 | Gasket | 1 |
| M-2M574 | Gasket | 2 |
| M-2M4071 | Gasket | 1 |
| M-2M4453 | O-Ring Seal | 1 |
| M-2M5173 | Turbocharger Flange Seal | 2 |
| M-2M5202 | Gasket | 2 |
| M-6B831 | Gasket | 1 |
| M-2M6203 | Gasket | 6 |
| M-2M8016 | Gasket | 1 |
| M-2M8089 | Gasket | 1 |
| M-2M8512 | Gasket | 1 |
| M-2M9189 | Oil Change Group Gasket | 2 |
| M-2M9222 | Gasket | 2 |
| M-4M78 | Plate Oil Pan Gasket | 1 |
| M-4M1832 | Gasket | 4 |
| M-4M1851 | Gasket | 1 |
| M-4M2920 | Gasket | 1 |
| M-7B305 | O-Ring Seal | 1 |
| M-4M4460 | Gasket | 2 |
| M-4N1059 | Starter Gasket | 1 |
| M-4M8210 | Lock | 1 |
| M-4M8303 | O-Ring Seal | 2 |
| M-5M1868 | O-Ring Seal | 6 |
| M-5M1902 | Gasket | 1 |
| M-5M2619 | Gasket | 1 |
| M-5M2622 | Gasket | 1 |
| M-5M3038 | Planetary O-Ring Seal | 2 |
| M-5M3535 | Gasket | 1 |
Disclaimer: Limitless Contracting LLC is an independent supplier of premium aftermarket replacement engine parts. All manufacturer names, numbers, symbols, and descriptions (including Caterpillar, Cummins, Detroit Diesel, etc.) are registered trademarks of their respective owners. Their use on this website is strictly for identification and cross-reference compatibility purposes only. Limitless Contracting LLC is not affiliated with, endorsed by, or sponsored by any OEM trademark holders.

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For order assistance or part verification, contact our team before placing the order.
$1,124.58
Find quick answers about part fitment, availability, shipping, and ordering to help you buy with confidence.
We strongly recommend providing your Engine Serial Number (ESN) or VIN before placing an order. Diesel engine components can vary by engine model, CPL, and production year — even when part numbers look similar.
At Limitless Contracting, we verify compatibility whenever an ESN or VIN is provided to help ensure you receive the correct part the first time.
To avoid delays or incorrect orders:
Our goal is to eliminate guesswork and keep your equipment running with minimal downtime.
Eligible items may be returned within 30 days from the date of delivery when they are new, unused, uninstalled, complete, in original packaging, and approved with an RMA number before anything is shipped back.
Customer-choice returns are subject to customer-paid return shipping and a 15% restocking fee. If a return is caused by our fulfillment error or a qualifying delivery issue, we will review the issue and provide the appropriate replacement, refund, prepaid label, or freight instructions when applicable.
Some items may be restricted or non-returnable once opened, installed, modified, contaminated, damaged after delivery, or removed from factory-sealed protective packaging.
Our published product prices include any applicable core value. We do not charge separate refundable core deposits, and we do not accept core returns, core credits, or core exchanges.
For complete return eligibility, RMA steps, refund timing, and return shipping rules, review our Returns & Refund Policy. Shipping timelines and delivery claims are covered in our Shipping & Delivery Policy.
Unauthorized returns cannot be accepted.
Online checkout is handled through Shopify's secure checkout and the payment providers enabled for this store. Checkout pages use SSL encryption to help protect personal and payment information during transmission.
Limitless Contracting does not ask customers to send full credit card numbers by email, text, or chat. If you prefer help before ordering, contact us and we can assist with part verification and order questions.
We begin processing orders quickly to reduce downtime for customers. If you need to change or cancel your order, please contact us as soon as possible.
Order changes or cancellations may be possible if:
Once an order has shipped, it cannot be canceled. In that case, the order may fall under our standard return policy, including applicable restocking fees and return shipping costs.
Please note:
If you need assistance, contact our team immediately with your order number so we can review the status and advise on available options.
Yes. Customers may place orders through our website, or contact us by email or phone for help with part selection, availability, custom quotes, and order questions.
You can reach us by:
Our regular business hours are Monday through Friday, 8:00 AM to 6:00 PM ET. Messages submitted outside business hours are reviewed on the next business day.
Limitless Contracting specializes in supplying aftermarket engine components designed to offer reliable fitment and operational durability.
We do not market our parts as original equipment. Instead, we source components through established distributor and supplier networks that focus on recognized aftermarket manufacturing and inspection standards.
Our sourcing partners focus on quality control tracking, including:
Parts in our catalog are offered as aftermarket replacement components for corresponding reference numbers, with fitment details provided to help customers verify compatibility before ordering.
Yes. Many engine parts sold by Limitless Contracting are backed by warranty coverage under our Limited Warranty Policy.
Warranty coverage varies by product category and may include:
Warranty terms apply to defects in material and workmanship under normal use and service.
Please note:
Because diesel engine components operate under demanding conditions, warranty eligibility depends on proper installation, maintenance, and diagnostic verification.
For complete details — including exclusions, claim procedures, labor reimbursement limits, and manufacturer-backed components — please review our full Warranty Policy.
Warranty claims are processed separately from standard returns and require prior written authorization. Do not ship suspected warranty components to Limitless Contracting LLC without a designated warranty RMA and explicit logistics routing instructions.
Free shipping may be available on select products or qualifying orders once a minimum order value is met. When applicable, this will typically be indicated on the product page or in promotional notices throughout the website.
If you have any questions regarding shipping eligibility, please feel free to contact our team.
We strive to keep our pricing fair, competitive, and transparent. While we do our best to offer strong value, we are happy to review reasonable price-match requests when possible. Please note that this typically excludes pricing errors, limited-time promotions, liquidation sales, auction listings, or pricing from membership-based marketplaces. If you believe you have found a comparable offer, we encourage you to reach out and our team will gladly review it.
Limitless Contracting LLC is headquartered in the greater Atlanta area in Lawrenceville, GA 30045, USA.
Orders may ship from our inventory, supplier warehouses, or distribution partners depending on product availability and destination to ensure efficient and reliable delivery.
Most orders are processed and shipped within 1–3 business days, depending on product availability and order requirements. Our team works to process and dispatch orders as efficiently as possible; however, fulfillment time may vary based on factors such as order volume, product availability, and any special handling, assembly, or packaging requirements. Orders placed after business hours, on weekends, or on holidays will be processed on the next available business day.
For expedited shipping, the selected shipping service determines the delivery speed once the order has shipped. Please note that selecting expedited shipping does not guarantee immediate shipment, as order processing may still depend on product availability and preparation requirements. If your order is time-sensitive, we recommend contacting our team prior to placing the order so we can assist.
Once shipped, typical transit times are as follows:
Please note that transit times are estimates and may vary depending on carrier schedules, weather conditions, and destination accessibility. If you have questions regarding product availability, shipping timelines, or delivery options, our team will be happy to assist.
Once your order ships, you will receive a shipping confirmation email containing your tracking number and carrier information.
You can use this tracking number to monitor your shipment directly through the carrier’s website.
Tracking details are typically provided:
For freight (LTL) shipments, tracking may include:
If you created an account during checkout, you may also log in to view your order status and shipment details.
If you have not received tracking information or need assistance locating your shipment, please contact our team with your order number and we will be happy to assist.
Yes, we can support international shipping on a quote-based, case-by-case basis. Sourcing and shipping options depend on part availability, destination regulations, freight requirements, and carrier limitations.
Depending on the order size and destination, shipping options may include:
Transit timeframes, carrier availability, and shipping costs vary based on destination, package size, and weight. For an international shipping quote or to check destination eligibility, please contact our team with your part numbers and delivery address before ordering.
No. Limitless Contracting does not ship orders via the U.S. Postal Service (USPS).
Standard parcel shipments are routed through established commercial carrier networks such as UPS, FedEx, DHL, or comparable private transport providers. Heavy, oversized, or high-value diesel engine components may require LTL freight instead of parcel service.
Carrier selection is based on package size, destination, delivery requirements, and available fulfillment location.
If you have a preferred carrier or freight forwarder, please contact us before placing your order so we can review available options.
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Legal Disclaimer
All parts featured on this e-store are aftermarket replacement engine parts. All manufacturer names, numbers, symbols, videos, and descriptions are registered trademarks and/or copyrighted works of their respective owners. Limitless Contracting LLC makes no claim of ownership to these marks or videos, and their use is strictly for identification and informational purposes. This page may contain linked or embedded videos from external content creators. These videos remain the intellectual property of their respective creators and trademark holders. Any views, opinions, or statements expressed in such videos are solely those of the original creators and do not necessarily reflect the views or positions of Limitless Contracting LLC. Limitless Contracting LLC is not affiliated with, endorsed by, or sponsored by any of the trademark holders referenced herein.