King XP series race main bearing set for the Nissan SR20DE and SR20DET 2.0L DOHC 16-valve engine, turbo included. King describes XP as a tri-metal lead bronze layered material with a nano-scaled hardening process applied to the Babbitt overlay, rated to withstand 10,200 PSI, that overlay is what lets a race bearing tolerate the load spikes and the momentary metal-to-metal contact a boosted SR20 puts through the mains. The set is supplied as King's Race pMaxBlack construction.
This listing is the STD (standard) size, the size you use with a crankshaft whose main journals are at nominal factory diameter. King also catalogues this same bearing in STDX and in 0.25mm, 0.026in, 0.5mm and 0.025in undersizes. STD and STDX are listed by King as two separate sizes under the same MB5243XP part family; King does not publish a numeric wall or clearance difference between them, so measure your journals and your target clearance and order the size that matches. If you are unsure which of the two you need, contact us before ordering.
Specifications
| Type | Performance main bearing set |
| Bearing Size | Standard (STD) |
| Set Contents | 5 pairs (10 bearing shells), main positions 1-5 |
| Material | XP tri-metal lead bronze with nano-hardened Babbitt overlay (Race pMaxBlack) |
| Load Rating | 10,200 PSI (King XP material rating) |
| Engine | Nissan SR20DE / SR20DET, 2.0L DOHC 16v, incl. turbo |
| Part Number | KINGMB5243XP |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1991-1996,1999-2002 | INFINITI | G20 | Base |
| 1994-1996,1999-2002 | INFINITI | G20 | T |
| 1995-1998 | Nissan | 200SX | SE-R |
| 1991-1993 | Nissan | NX | SE |
| 1991-1993 | Nissan | NX | XE |
| 1998-2001 | Nissan | Sentra | SE |
| 1991-1994 | Nissan | Sentra | SE-R |
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
