The King XP Series is a copper based tri-metal race main bearing set finished with King's pMaxBlack overlay, a hardened surface layer King rates at 10,200 psi against roughly 8,000 to 8,500 psi for a conventional overlay. That extra fatigue strength is what lets a bottom end take boost or sustained high rpm without the mains giving up first. SecureBond micro-etch bonding anchors the overlay to the intermediate layer. The set covers all five main journals, ten shells in total, in standard size for a crankshaft that has not been reground.
Specifications
| Type | Copper based tri-metal race main bearing set (King XP Series, pMaxBlack overlay) |
| Size | STD (standard, for an unground crankshaft) |
| Engine Application | Nissan / Infiniti VK45DD, VK45DE, VK50VE, VK56DE, VK56VD V8 |
| Load Capacity | 10,200 psi (King rating) |
| Crankshaft Journal Diameter | 63.96 / 63.95 mm (2.5180 / 2.5178 in) |
| Quantity | 10 shells (5 pairs, complete V8 main set) |
| Part Number | MB5770XP |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2003-2008 | INFINITI | FX45 | Base |
| 2009-2013 | INFINITI | FX50 | Base |
| 2003-2004,2006-2010 | INFINITI | M45 | Base |
| 2006-2007 | INFINITI | M45 | Sport |
| 2008-2010 | INFINITI | M45 | X |
| 2011-2013 | INFINITI | M56 | Base |
| 2011-2013 | INFINITI | M56 | X |
| 2002-2006 | INFINITI | Q45 | Base |
| 2014-2017 | INFINITI | Q70 | 5.6 |
| 2018-2019 | INFINITI | Q70 | 5.6 Luxe |
| 2015-2017 | INFINITI | Q70L | 5.6 |
| 2018-2019 | INFINITI | Q70L | 5.6 Luxe |
| 2004-2013 | INFINITI | QX56 | Base |
| 2014 | INFINITI | QX70 | Base |
| 2014-2018 | INFINITI | QX80 | Base |
| 2016-2017,2019-2020 | INFINITI | QX80 | Limited |
| 2019-2024 | INFINITI | QX80 | Luxe |
| 2021-2024 | INFINITI | QX80 | Premium Select |
| 2021-2024 | INFINITI | QX80 | Sensory |
| 2005-2009 | Nissan | Armada | LE |
| 2021-2024 | Nissan | Armada | Midnight Edition |
| 2010-2015,2017-2024 | Nissan | Armada | Platinum |
| 2018-2020 | Nissan | Armada | Platinum Reserve |
| 2021-2023 | Nissan | Armada | S |
| 2005-2010 | Nissan | Armada | SE |
| 2005-2006 | Nissan | Armada | SE Off-Road |
| 2011-2015,2017-2024 | Nissan | Armada | SL |
| 2011-2015,2017-2024 | Nissan | Armada | SV |
| 2010 | Nissan | Armada | Titanium |
| 2012-2017 | Nissan | NV2500 | S |
| 2015-2017 | Nissan | NV2500 | SL |
| 2012-2017 | Nissan | NV2500 | SV |
| 2012-2017 | Nissan | NV3500 | S |
| 2012-2017 | Nissan | NV3500 | SL |
| 2012-2017 | Nissan | NV3500 | SV |
| 2008-2012 | Nissan | Pathfinder | LE |
| 2008 | Nissan | Pathfinder | SE |
| 2004 | Nissan | Pathfinder Armada | LE |
| 2004 | Nissan | Pathfinder Armada | SE |
| 2004-2010 | Nissan | TITAN | LE |
| 2017-2024 | Nissan | TITAN | Platinum Reserve |
| 2008-2015,2017-2024 | Nissan | TITAN | PRO-4X |
| 2011-2015,2017-2023 | Nissan | TITAN | S |
| 2004-2010 | Nissan | TITAN | SE |
| 2011-2015,2017-2021 | Nissan | TITAN | SL |
| 2011-2015,2017-2024 | Nissan | TITAN | SV |
| 2004-2010 | Nissan | TITAN | XE |
| 2016-2024 | Nissan | TITAN XD | Platinum Reserve |
| 2016-2024 | Nissan | TITAN XD | PRO-4X |
| 2016-2023 | Nissan | TITAN XD | S |
| 2016-2021 | Nissan | TITAN XD | SL |
| 2016-2024 | Nissan | TITAN XD | SV |
Shipping
- Orders placed before 3 PM EST typically ship the same business day. Larger items ship within 1 to 3 business days.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Special order items follow a lead time we confirm with you individually before the order is committed.
- Backordered items ship as soon as stock lands. Lead times are manufacturer estimates and can change. Contact us for current ETAs.
- Need to cancel? Email us right away. Cancellations are not guaranteed once an order is in process. In-stock orders cancel free before they ship; a 6% fee applies only to confirmed backorders and special orders.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30 days from delivery to request and ship back a return on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee on the item price before tax and shipping. Shipping is not refunded in either direction. All waived if the item is defective or we made the error.
- Fitment guaranteed: select your vehicle above, or confirm fitment with us in writing before you order. If the part shows as a fit and it is wrong, the return is on us, even after installation. Otherwise, installed or used parts cannot be returned.
- Final sale: special orders, coilovers, electronics, engine internals, turbochargers, superchargers and turbo kits, unless defective or we sent the wrong item.
- Product images may be representative. The SKU and specifications in the listing are what ships.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Returns & Refunds · Warranty
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